| Weather / Japan Weather Temperature |
Weather in Tanegashima, Japan
Current Conditions (Sunday, April 28, 2024 at 18:00 Asia/Tokyo time)
 | Temperature: 70°F (21°C) |
Forecast Overview
Mon Apr 29 
77°F 70°F 25°C 21°C Chance of heavy rain before sunrise and in the afternoon.
detailsTue Apr 30 
73°F 66°F 23°C 19°C Partly cloudy skies.
detailsWed May 1 
70°F 64°F 21°C 18°C Chance of light rain in the morning.
detailsThu May 2 70°F 64°F 21°C 18°C Chance of light rain in the morning.
detailsFri May 3 
73°F 68°F 23°C 20°C Chance of light rain in the morning and late at night.
detailsSat May 4 
70°F 66°F 21°C 19°C Chance of rain until 6 pm.
detailsSun May 5 
73°F 68°F 23°C 20°C Chance of light rain in the morning.
detailsMon May 6 73°F 70°F 23°C 21°C Chance of heavy rain almost all day.
detailsTue May 7 75°F 68°F 24°C 20°C More clouds than sun.
detailsWed May 8 75°F 66°F 24°C 19°C Considerable cloudiness.
detailsThu May 9 
75°F 68°F 24°C 20°C Mostly cloudy skies.
detailsFri May 10 73°F 66°F 23°C 19°C Overcast skies.
detailsSat May 11 72°F 66°F 22°C 19°C Considerable cloudiness.
detailsSun May 12 72°F 68°F 22°C 20°C Chance of light rain in the morning and in the afternoon.
details
Detailed Forecast
| Sunday, April 28 | sunrise: 05:36 sunset: 18:51 |
| Chance of light rain between 9 am and 12 pm and after 3 pm. Estimated precipitation: 0.02 in (0.4375 mm). Overcast skies. Wind: 12 mph (20 km/h). |
| Time | Skies | Conditions | Temp | Wind | Humidity | Soil Moisture |
| 18:00 21:00 |  | Chance of light rain. Precipitation: 0.01 in (0.3125 mm). | 72°F (22°C) | 12 mph (20 km/h) | 93% | 0.32% |
| 21:00 00:00 | | Chance of light rain. Precipitation: 0 in (0.125 mm). | 72°F (22°C) | 12 mph (19 km/h) | 94% | 0.32% |
| Monday, April 29 | sunrise: 05:35 sunset: 18:52 |
| Low around 70°F (21°C), high around 78°F (25°C). Chance of heavy rain before sunrise (from midnight to 6 am) and late in the afternoon (from 3 pm to 6 pm). The precipitation may fall as scattered showers of varying intensity. Estimated precipitation: 1.8 in (45.5 mm). More sun than clouds. Wind: 17 mph (28 km/h). |
| Time | Skies | Conditions | Temp | Wind | Humidity | Soil Moisture |
| 00:00 03:00 | | Chance of scattered rain showers. Precipitation: 0.13 in (3.3125 mm). | 71°F (22°C) | 13 mph (20 km/h) | 96% | 0.338% |
| 03:00 06:00 | | Chance of heavy rain. Precipitation: 1.23 in (31.1875 mm). | 71°F (22°C) | 16 mph (25 km/h) | 99% | 0.408% |
| 06:00 09:00 | | Overcast. Precipitation: 0.41 in (10.375 mm). | 71°F (22°C) | 17 mph (28 km/h) | 97% | 0.366% |
| 09:00 12:00 | | Sunny. | 77°F (25°C) | 7 mph (11 km/h) | 77% | 0.349% |
| 12:00 15:00 | | Times of sun and clouds. Precipitation: 0.01 in (0.1875 mm). | 77°F (25°C) | 4 mph (7 km/h) | 75% | 0.338% |
| 15:00 18:00 | | Chance of light rain. Precipitation: 0 in (0.125 mm). | 75°F (24°C) | 5 mph (8 km/h) | 83% | 0.336% |
| 18:00 21:00 | | Clear. | 73°F (23°C) | 8 mph (13 km/h) | 87% | 0.335% |
| 21:00 00:00 | | Clear. Precipitation: 0.01 in (0.3125 mm). | 71°F (22°C) | 6 mph (10 km/h) | 90% | 0.333% |
| Tuesday, April 30 | sunrise: 05:34 sunset: 18:53 |
| Low around 67°F (19°C), high around 74°F (23°C). Estimated precipitation: 0.01 in (0.1875 mm). Partly cloudy skies. Wind: 23 mph (38 km/h). |
| Time | Skies | Conditions | Temp | Wind | Humidity | Soil Moisture |
| 00:00 03:00 | | Times of clear skies and clouds. Precipitation: 0 in (0.125 mm). | 72°F (22°C) | 10 mph (16 km/h) | 91% | 0.331% |
| 03:00 06:00 | | More sun than clouds. Precipitation: 0 in (0.0625 mm). | 70°F (21°C) | 19 mph (31 km/h) | 88% | 0.329% |
| 06:00 09:00 | | More clouds than sun. | 72°F (22°C) | 14 mph (22 km/h) | 78% | 0.324% |
| 09:00 12:00 | | More sun than clouds. | 73°F (23°C) | 18 mph (28 km/h) | 75% | 0.317% |
| 12:00 15:00 | | More sun than clouds. | 73°F (23°C) | 16 mph (26 km/h) | 76% | 0.312% |
| 15:00 18:00 | | Mostly sunny, with a few passing clouds. | 70°F (21°C) | 16 mph (25 km/h) | 81% | 0.311% |
| 18:00 21:00 | | Overcast. | 69°F (20°C) | 23 mph (38 km/h) | 85% | 0.313% |
| 21:00 00:00 | | Overcast. | 67°F (19°C) | 15 mph (24 km/h) | 87% | 0.313% |
| Wednesday, May 1 | sunrise: 05:33 sunset: 18:53 |
| Low around 65°F (18°C), high around 70°F (21°C). Chance of light rain early in the morning (before 3 am and from 6 am to 9 am). Estimated precipitation: 0.08 in (2.0625 mm). Overcast skies. Wind: 18 mph (28 km/h). |
| Time | Skies | Conditions | Temp | Wind | Humidity | Soil Moisture |
| 00:00 03:00 | | Chance of rain. Precipitation: 0.04 in (1 mm). | 66°F (19°C) | 11 mph (17 km/h) | 90% | 0.317% |
| 03:00 06:00 | | Overcast. Precipitation: 0.02 in (0.625 mm). | 65°F (18°C) | 9 mph (15 km/h) | 89% | 0.318% |
| 06:00 09:00 | | Chance of light rain. Precipitation: 0.01 in (0.1875 mm). | 66°F (19°C) | 13 mph (21 km/h) | 87% | 0.316% |
| 09:00 12:00 | | Overcast. | 68°F (20°C) | 16 mph (25 km/h) | 74% | 0.312% |
| 12:00 15:00 | | Overcast. | 69°F (21°C) | 18 mph (28 km/h) | 71% | 0.306% |
| 15:00 18:00 | | Overcast. | 66°F (19°C) | 10 mph (15 km/h) | 74% | 0.305% |
| 18:00 21:00 | | Overcast. | 65°F (19°C) | 7 mph (11 km/h) | 77% | 0.307% |
| 21:00 00:00 | | Overcast. Precipitation: 0.01 in (0.25 mm). | 67°F (19°C) | 8 mph (14 km/h) | 83% | 0.308% |
| Thursday, May 2 | sunrise: 05:32 sunset: 18:54 |
| Low around 65°F (18°C), high around 70°F (21°C). Chance of light rain early in the morning (between 6 am and 9 am). Estimated precipitation: 0.05 in (1.25 mm). Overcast skies. Wind: 22 mph (35 km/h). |
| Time | Skies | Conditions | Temp | Wind | Humidity | Soil Moisture |
| 00:00 03:00 | | Overcast. Precipitation: 0.02 in (0.4375 mm). | 66°F (19°C) | 16 mph (26 km/h) | 81% | 0.309% |
| 03:00 06:00 | | Overcast. Precipitation: 0.02 in (0.4375 mm). | 67°F (20°C) | 22 mph (35 km/h) | 86% | 0.31% |
| 06:00 09:00 | | Chance of light rain. Precipitation: 0 in (0.0625 mm). | 68°F (20°C) | 18 mph (29 km/h) | 81% | 0.307% |
| 09:00 12:00 | | Overcast. Precipitation: 0.01 in (0.1875 mm). | 68°F (20°C) | 19 mph (30 km/h) | 74% | 0.306% |
| 12:00 15:00 | | Overcast. | 68°F (20°C) | 19 mph (31 km/h) | 71% | 0.303% |
| 15:00 18:00 | | Overcast. | 68°F (20°C) | 17 mph (27 km/h) | 72% | 0.301% |
| 18:00 21:00 | | Overcast. | 69°F (21°C) | 15 mph (25 km/h) | 70% | 0.301% |
| 21:00 00:00 | | Overcast. Precipitation: 0 in (0.125 mm). | 69°F (20°C) | 17 mph (27 km/h) | 77% | 0.3% |
| Friday, May 3 | sunrise: 05:31 sunset: 18:55 |
| Low around 69°F (20°C), high around 74°F (23°C). Chance of light rain early in the morning (between 6 am and 9 am) and at night (after 9 pm). Estimated precipitation: 0.03 in (0.8125 mm). Mostly cloudy skies. Wind: 13 mph (21 km/h). |
| Time | Skies | Conditions | Temp | Wind | Humidity | Soil Moisture |
| 00:00 03:00 | | Partly cloudy. | 69°F (21°C) | 13 mph (21 km/h) | 70% | 0.3% |
| 03:00 06:00 | | Overcast. | 70°F (21°C) | 11 mph (18 km/h) | 71% | 0.3% |
| 06:00 09:00 | | Chance of light rain. Precipitation: 0 in (0.0625 mm). | 71°F (22°C) | 11 mph (18 km/h) | 77% | 0.299% |
| 09:00 12:00 | | Overcast. | 73°F (23°C) | 11 mph (17 km/h) | 66% | 0.294% |
| 12:00 15:00 | | Mostly cloudy. | 73°F (23°C) | 8 mph (13 km/h) | 71% | 0.29% |
| 15:00 18:00 | | Overcast. | 71°F (22°C) | 8 mph (12 km/h) | 78% | 0.29% |
| 18:00 21:00 | | Overcast. Precipitation: 0 in (0.0625 mm). | 70°F (21°C) | 6 mph (10 km/h) | 90% | 0.293% |
| 21:00 00:00 | | Chance of light rain. Precipitation: 0.03 in (0.6875 mm). | 70°F (21°C) | 4 mph (7 km/h) | 91% | 0.296% |
| Saturday, May 4 | sunrise: 05:30 sunset: 18:55 |
| Low around 67°F (19°C), high around 70°F (21°C). Chance of rain until 6 pm. The precipitation may fall as scattered showers of varying intensity. Estimated precipitation: 0.51 in (13.0625 mm). Partly cloudy skies. Wind: 20 mph (33 km/h). |
| Time | Skies | Conditions | Temp | Wind | Humidity | Soil Moisture |
| 00:00 03:00 | | Chance of light rain. Precipitation: 0.03 in (0.8125 mm). | 70°F (21°C) | 6 mph (9 km/h) | 89% | 0.301% |
| 03:00 06:00 | | Chance of scattered rain showers. Precipitation: 0.06 in (1.625 mm). | 69°F (21°C) | 4 mph (6 km/h) | 91% | 0.304% |
| 06:00 09:00 | | Chance of rain. Precipitation: 0.25 in (6.4375 mm). | 68°F (20°C) | 19 mph (31 km/h) | 95% | 0.348% |
| 09:00 12:00 | | Chance of rain. Precipitation: 0.15 in (3.75 mm). | 68°F (20°C) | 20 mph (33 km/h) | 86% | 0.327% |
| 12:00 15:00 | | Chance of light rain. Precipitation: 0.01 in (0.25 mm). | 68°F (20°C) | 18 mph (30 km/h) | 85% | 0.319% |
| 15:00 18:00 | | Chance of light rain. Precipitation: 0 in (0.125 mm). | 70°F (21°C) | 16 mph (26 km/h) | 78% | 0.314% |
| 18:00 21:00 | | Clear. Precipitation: 0 in (0.0625 mm). | 70°F (21°C) | 15 mph (23 km/h) | 76% | 0.312% |
| 21:00 00:00 | | Clear. | 69°F (21°C) | 14 mph (23 km/h) | 74% | 0.309% |
| Sunday, May 5 | sunrise: 05:29 sunset: 18:56 |
| Low around 69°F (20°C), high around 73°F (23°C). Chance of light rain in the morning (between 9 am and 12 pm). Estimated precipitation: 0.02 in (0.4375 mm). More clouds than sun. Wind: 20 mph (33 km/h). |
| Time | Skies | Conditions | Temp | Wind | Humidity | Soil Moisture |
| 00:00 03:00 | | Clear. | 69°F (20°C) | 15 mph (24 km/h) | 70% | 0.308% |
| 03:00 06:00 | | Mostly cloudy. | 69°F (21°C) | 15 mph (25 km/h) | 69% | 0.306% |
| 06:00 09:00 | | Sunny. | 72°F (22°C) | 16 mph (26 km/h) | 67% | 0.301% |
| 09:00 12:00 | | Chance of light rain. Precipitation: 0.01 in (0.25 mm). | 73°F (23°C) | 19 mph (30 km/h) | 71% | 0.296% |
| 12:00 15:00 | | Sunny. | 72°F (22°C) | 18 mph (28 km/h) | 67% | 0.291% |
| 15:00 18:00 | | More sun than clouds. | 71°F (22°C) | 18 mph (30 km/h) | 73% | 0.289% |
| 18:00 21:00 | | Overcast. Precipitation: 0 in (0.125 mm). | 70°F (21°C) | 19 mph (31 km/h) | 75% | 0.29% |
| 21:00 00:00 | | Overcast. Precipitation: 0 in (0.0625 mm). | 70°F (21°C) | 20 mph (33 km/h) | 71% | 0.29% |
| Monday, May 6 | sunrise: 05:28 sunset: 18:57 |
| Low around 69°F (21°C), high around 73°F (23°C). Chance of heavy rain all day (from 3 am to 9 pm). The precipitation may fall as scattered showers of varying intensity. Estimated precipitation: 1.6 in (40.9375 mm). Overcast skies. Wind: 25 mph (40 km/h). |
| Time | Skies | Conditions | Temp | Wind | Humidity | Soil Moisture |
| 00:00 03:00 | | Overcast. | 70°F (21°C) | 22 mph (36 km/h) | 73% | 0.289% |
| 03:00 06:00 | | Chance of light rain. Precipitation: 0 in (0.0625 mm). | 70°F (21°C) | 23 mph (37 km/h) | 74% | 0.288% |
| 06:00 09:00 | | Chance of rain. Precipitation: 0.05 in (1.3125 mm). | 70°F (21°C) | 25 mph (40 km/h) | 82% | 0.296% |
| 09:00 12:00 | | Chance of rain. Precipitation: 0.14 in (3.5 mm). | 69°F (21°C) | 22 mph (36 km/h) | 88% | 0.314% |
| 12:00 15:00 | | Chance of heavy rain. Precipitation: 0.45 in (11.5 mm). | 70°F (21°C) | 22 mph (36 km/h) | 94% | 0.358% |
| 15:00 18:00 | | Chance of heavy rain. Precipitation: 0.7 in (17.8125 mm). | 72°F (22°C) | 21 mph (34 km/h) | 93% | 0.365% |
| 18:00 21:00 | | Chance of scattered rain showers. Precipitation: 0.22 in (5.625 mm). | 72°F (22°C) | 17 mph (27 km/h) | 95% | 0.375% |
| 21:00 00:00 | | Partly cloudy. Precipitation: 0.04 in (1.125 mm). | 70°F (21°C) | 8 mph (13 km/h) | 96% | 0.351% |
| Tuesday, May 7 | sunrise: 05:28 sunset: 18:57 |
| Low around 67°F (20°C), high around 75°F (24°C). More clouds than sun. Wind: 13 mph (20 km/h). |
| Time | Skies | Conditions | Temp | Wind | Humidity | Soil Moisture |
| 00:00 03:00 | | Times of clear skies and clouds. | 69°F (20°C) | 8 mph (13 km/h) | 95% | 0.343% |
| 03:00 06:00 | | Mostly cloudy. | 68°F (20°C) | 9 mph (14 km/h) | 93% | 0.338% |
| 06:00 09:00 | | Overcast. | 71°F (22°C) | 6 mph (9 km/h) | 84% | 0.332% |
| 09:00 12:00 | | Partly cloudy. | 74°F (24°C) | 7 mph (12 km/h) | 75% | 0.324% |
| 12:00 15:00 | | More clouds than sun. | 73°F (23°C) | 11 mph (17 km/h) | 75% | 0.318% |
| 15:00 18:00 | | Overcast. | 71°F (21°C) | 13 mph (20 km/h) | 76% | 0.316% |
| 18:00 21:00 | | Clear. | 68°F (20°C) | 9 mph (15 km/h) | 79% | 0.317% |
| 21:00 00:00 | | Clear. | 67°F (20°C) | 7 mph (11 km/h) | 78% | 0.317% |
| Wednesday, May 8 | sunrise: 05:27 sunset: 18:58 |
| Low around 67°F (19°C), high around 76°F (24°C). Considerable cloudiness. Wind: 10 mph (16 km/h). |
| Time | Skies | Conditions | Temp | Wind | Humidity | Soil Moisture |
| 00:00 03:00 | | Clear. | 67°F (20°C) | 8 mph (13 km/h) | 78% | 0.316% |
| 03:00 06:00 | | Sunny. | 67°F (20°C) | 9 mph (14 km/h) | 79% | 0.316% |
| 06:00 09:00 | | Overcast. | 73°F (23°C) | 10 mph (16 km/h) | 66% | 0.311% |
| 09:00 12:00 | | Overcast. | 75°F (24°C) | 8 mph (13 km/h) | 62% | 0.305% |
| 12:00 15:00 | | Overcast. | 75°F (24°C) | 8 mph (13 km/h) | 62% | 0.3% |
| 15:00 18:00 | | Overcast. | 72°F (22°C) | 8 mph (13 km/h) | 70% | 0.299% |
| 18:00 21:00 | | Overcast. | 69°F (21°C) | 9 mph (14 km/h) | 79% | 0.302% |
| 21:00 00:00 | | Mostly clear. | 69°F (20°C) | 8 mph (13 km/h) | 80% | 0.303% |
| Thursday, May 9 | sunrise: 05:26 sunset: 18:59 |
| Low around 68°F (20°C), high around 75°F (24°C). Mostly cloudy skies. Wind: 11 mph (18 km/h). |
| Time | Skies | Conditions | Temp | Wind | Humidity | Soil Moisture |
| 00:00 03:00 | | A few passing clouds. | 69°F (21°C) | 10 mph (16 km/h) | 80% | 0.303% |
| 03:00 06:00 | | Overcast. | 68°F (20°C) | 9 mph (14 km/h) | 83% | 0.304% |
| 06:00 09:00 | | Overcast. | 73°F (23°C) | 8 mph (12 km/h) | 72% | 0.301% |
| 09:00 12:00 | | Mostly cloudy. | 75°F (24°C) | 8 mph (13 km/h) | 69% | 0.296% |
| 12:00 15:00 | | Overcast. | 75°F (24°C) | 8 mph (12 km/h) | 69% | 0.293% |
| 15:00 18:00 | | Overcast. | 71°F (22°C) | 11 mph (18 km/h) | 81% | 0.294% |
| 18:00 21:00 | | Overcast. | 70°F (21°C) | 11 mph (18 km/h) | 83% | 0.295% |
| 21:00 00:00 | | Overcast. | 69°F (20°C) | 10 mph (15 km/h) | 86% | 0.297% |
| Friday, May 10 | sunrise: 05:25 sunset: 18:59 |
| Low around 67°F (19°C), high around 73°F (23°C). Overcast skies. Wind: 11 mph (18 km/h). |
| Time | Skies | Conditions | Temp | Wind | Humidity | Soil Moisture |
| 00:00 03:00 | | Overcast. | 68°F (20°C) | 11 mph (17 km/h) | 78% | 0.297% |
| 03:00 06:00 | | Overcast. | 68°F (20°C) | 11 mph (18 km/h) | 70% | 0.296% |
| 06:00 09:00 | | Overcast. | 70°F (21°C) | 7 mph (11 km/h) | 61% | 0.295% |
| 09:00 12:00 | | Overcast. | 72°F (22°C) | 8 mph (12 km/h) | 54% | 0.291% |
| 12:00 15:00 | | Overcast. | 73°F (23°C) | 4 mph (6 km/h) | 50% | 0.288% |
| 15:00 18:00 | | Partly cloudy. | 71°F (22°C) | 2 mph (3 km/h) | 59% | 0.288% |
| 18:00 21:00 | | Overcast. | 67°F (20°C) | 1 mph (2 km/h) | 67% | 0.29% |
| 21:00 00:00 | | Overcast. | 67°F (20°C) | 2 mph (3 km/h) | 73% | 0.292% |
| Saturday, May 11 | sunrise: 05:24 sunset: 19:00 |
| Low around 66°F (19°C), high around 72°F (22°C). Estimated precipitation: 0 in (0.125 mm). Considerable cloudiness. Wind: 14 mph (22 km/h). |
| Time | Skies | Conditions | Temp | Wind | Humidity | Soil Moisture |
| 00:00 03:00 | | Overcast. | 67°F (19°C) | 4 mph (6 km/h) | 76% | 0.293% |
| 03:00 06:00 | | Overcast. | 68°F (20°C) | 6 mph (10 km/h) | 66% | 0.293% |
| 06:00 09:00 | | Overcast. | 70°F (21°C) | 14 mph (22 km/h) | 73% | 0.291% |
| 09:00 12:00 | | Mostly cloudy. | 71°F (22°C) | 13 mph (21 km/h) | 69% | 0.285% |
| 12:00 15:00 | | Sunny. | 71°F (22°C) | 12 mph (19 km/h) | 70% | 0.28% |
| 15:00 18:00 | | Sunny. | 69°F (21°C) | 11 mph (18 km/h) | 79% | 0.28% |
| 18:00 21:00 | | Overcast. Precipitation: 0 in (0.0625 mm). | 68°F (20°C) | 9 mph (15 km/h) | 80% | 0.282% |
| 21:00 00:00 | | Mostly cloudy. Precipitation: 0 in (0.0625 mm). | 69°F (21°C) | 8 mph (14 km/h) | 76% | 0.284% |
| Sunday, May 12 | sunrise: 05:24 sunset: 19:01 |
| Low around 68°F (20°C), high around 72°F (22°C). Chance of light rain during the morning and early afternoon (between 6 am and 3 pm). Estimated precipitation: 0.08 in (2.125 mm). Overcast skies. Wind: 11 mph (18 km/h). |
| Time | Skies | Conditions | Temp | Wind | Humidity | Soil Moisture |
| 00:00 03:00 | | Overcast. Precipitation: 0 in (0.125 mm). | 69°F (21°C) | 7 mph (12 km/h) | 71% | 0.285% |
| 03:00 06:00 | | Overcast. Precipitation: 0 in (0.0625 mm). | 69°F (20°C) | 10 mph (15 km/h) | 76% | 0.285% |
| 06:00 09:00 | | Chance of light rain. Precipitation: 0.02 in (0.4375 mm). | 70°F (21°C) | 9 mph (15 km/h) | 77% | 0.286% |
| 09:00 12:00 | | Chance of light rain. Precipitation: 0.03 in (0.875 mm). | 70°F (21°C) | 9 mph (15 km/h) | 79% | 0.29% |
| 12:00 15:00 | | Chance of light rain. Precipitation: 0.02 in (0.5 mm). | 71°F (22°C) | 11 mph (18 km/h) | 72% | 0.288% |
| 15:00 18:00 | | Overcast. Precipitation: 0 in (0.0625 mm). | 71°F (22°C) | 11 mph (18 km/h) | 72% | 0.286% |
| 18:00 21:00 | | Mostly cloudy. | 70°F (21°C) | 10 mph (16 km/h) | 74% | 0.286% |
| 21:00 00:00 | | Partly cloudy. Precipitation: 0 in (0.0625 mm). | 69°F (21°C) | 8 mph (12 km/h) | 75% | 0.286% |
Climate Chart
Places with a similar climate: Hachijojima, Nyutabaru, Pantelleria (Italy).
Temperature variation graph for the last seven days
Humidity Variation Graph
Wind speed
Weather Station: Tanegashima Airport (latitude 30-33N, longitude 130-57E)
Local Time:
Tanegashima is in the "Asia/Tokyo" timezone, commonly abbreviated JST.
This timezone does not apply the Daylight Saving Time (DST) scheme - it uses standard time throughout the year. The offset to Universal Time (UTC, GMT or Zulu) is +9:00 hours.
Weather and Temperature in Japan