Climate Insights for Iheya

, Okinawa, Japan

Hottest
August
29°C peak
Coldest
February
17°C low
Wettest
June
360mm rain
Best to Visit
Varies throughout year

Climate Overview

The climate in Iheya is warm and mild. The average annual temperature is 23°C and approximately 2097mm of precipitation falls per year. Iheya receives a notable amount of rainfall throughout the year, including during its driest month. Iheya is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, September. The coldest months are February, January, March, when temperatures can drop to 17°C.

Temperature

10° 15° 20° 25° 30° Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Max: 19° Average: 18° Min: 17° Feb Max: 19° Average: 18° Min: 17° Mar Max: 20° Average: 19° Min: 18° Apr Max: 22° Average: 21° Min: 20° May Max: 24° Average: 24° Min: 23° Jun Max: 27° Average: 26° Min: 26° Jul Max: 29° Average: 28° Min: 28° Aug Max: 29° Average: 29° Min: 28° Sep Max: 28° Average: 28° Min: 27° Oct Max: 26° Average: 26° Min: 25° Nov Max: 24° Average: 23° Min: 22° Dec Max: 21° Average: 20° Min: 19°
Max
Average
Min

Iheya sees moderate temperature variation throughout the year, ranging from 17°C to 29°C. The warmest month is August, when average highs reach 29°C and the mean temperature sits around 29°C. February is the coolest month, with minimum temperatures around 17°C and an average of 18°C. Daily temperature variation is modest, with an average difference of 2°C between highs and lows. The sharpest temperature change occurs between November and December, with a 3°C shift in average temperatures.

Precipitation

0mm 50mm 100mm 150mm 200mm 250mm 300mm 350mm 400mm Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Precipitation: 140mm Feb Precipitation: 103mm Mar Precipitation: 144mm Apr Precipitation: 157mm May Precipitation: 246mm Jun Precipitation: 360mm Jul Precipitation: 144mm Aug Precipitation: 177mm Sep Precipitation: 216mm Oct Precipitation: 169mm Nov Precipitation: 104mm Dec Precipitation: 139mm
Precipitation

Iheya is a very wet location, receiving approximately 2097mm of precipitation annually, which averages out to around 175mm per month. The wettest month is June, averaging 360mm of rainfall. May and September also tend to see above-average precipitation. The driest month is February, with just 103mm. That's 256mm less than June, the wettest month. Precipitation varies noticeably between seasons, with the first half (January to June) of the year generally seeing more rainfall.

Wind

0km/h 5km/h 10km/h Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Wind Speed: 7km/h Feb Wind Speed: 8km/h Mar Wind Speed: 7km/h Apr Wind Speed: 6km/h May Wind Speed: 6km/h Jun Wind Speed: 6km/h Jul Wind Speed: 6km/h Aug Wind Speed: 7km/h Sep Wind Speed: 7km/h Oct Wind Speed: 7km/h Nov Wind Speed: 8km/h Dec Wind Speed: 8km/h
Wind Speed

Iheya is relatively calm, with an average annual wind speed of 7km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is December, averaging 8km/h, though still comfortable for most outdoor activities. The calmest conditions occur in May, with average winds dropping to 6km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 2km/h gap between the calmest and windiest months.

Seasons

Winter
Dec 21
Spring
Mar 20
Summer
Jun 21
Autumn
Sep 23

90 days until Autumn

It is currently summer in Iheya, which began on June 21, 2026. Iheya is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in August at around 29°C, while the coldest stretch bottoms out in February near 17°C. Autumn is next, beginning on September 23, 2026 — 90 days from now.

Spring

Temperatures range from 18 to 24°C. Rainfall is heavy, totalling around 546mm across the season with a monthly average of 182mm. Winds are generally light, averaging 6km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.

Summer

Temperatures range from 26 to 29°C. Rainfall is heavy, totalling around 681mm across the season with a monthly average of 227mm. Winds are generally light, averaging 6km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.

Autumn

Temperatures range from 22 to 28°C. Rainfall is heavy, totalling around 488mm across the season with a monthly average of 163mm. Winds are generally light, averaging 7km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.

Winter

Temperatures range from 17 to 21°C. Rainfall is heavy, totalling around 382mm across the season with a monthly average of 127mm. Winds are generally light, averaging 8km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.

Monthly Climate Data

The table below shows monthly climate averages for Iheya based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.

Month
Min Temperature
Max Temperature
Wind Speed
Precipitation
Snow
Jan
17 °C
19 °C
7 km/h
140 mm
0 cm
Feb
17 °C
19 °C
8 km/h
103 mm
0 cm
Mar
18 °C
20 °C
7 km/h
144 mm
0 cm
Apr
20 °C
22 °C
6 km/h
157 mm
0 cm
May
23 °C
24 °C
6 km/h
246 mm
0 cm
Jun Current
26 °C
27 °C
6 km/h
360 mm
0 cm
Jul
28 °C
29 °C
6 km/h
144 mm
0 cm
Aug
28 °C
29 °C
7 km/h
177 mm
0 cm
Sep
27 °C
28 °C
7 km/h
216 mm
0 cm
Oct
25 °C
26 °C
7 km/h
169 mm
0 cm
Nov
22 °C
24 °C
8 km/h
104 mm
0 cm
Dec
19 °C
21 °C
8 km/h
139 mm
0 cm
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