Climate Overview
The climate in Iwo Jima Air Base is warm and mild. The average annual temperature is 25°C and approximately 1383mm of precipitation falls per year. Iwo Jima Air Base receives a notable amount of rainfall throughout the year, including during its driest month. Iwo Jima Air Base is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, September, August. The coldest months are February, January, March, when temperatures can drop to 20°C.
Temperature
Iwo Jima Air Base has relatively stable temperatures year-round, staying within a 9°C range. The warmest month is July, when average highs reach 29°C and the mean temperature sits around 28°C. February is the coolest month, with minimum temperatures around 20°C and an average of 21°C. Daily temperature variation is modest, with an average difference of 1°C between highs and lows. The sharpest temperature change occurs between November and December, with a 2°C shift in average temperatures.
Precipitation
Iwo Jima Air Base is a fairly wet location, receiving approximately 1383mm of precipitation annually, which averages out to around 115mm per month. The wettest month is August, averaging 201mm of rainfall. October and May also tend to see above-average precipitation. The driest month is February, with just 33mm. That's 168mm less than August, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.
Wind
Iwo Jima Air Base is relatively calm, with an average annual wind speed of 6km/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 7km/h, though still comfortable for most outdoor activities. The calmest conditions occur in June, with average winds dropping to 5km/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
90 days until Autumn
It is currently summer in Iwo Jima Air Base, which began on June 21, 2026. Iwo Jima Air Base 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 July at around 29°C, while the coldest stretch bottoms out in February near 20°C. Autumn is next, beginning on September 23, 2026 — 90 days from now.
Spring
Temperatures range from 20 to 26°C. Rainfall is heavy, totalling around 328mm across the season with a monthly average of 109mm. Winds are generally light, averaging 6km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 27 to 29°C. Rainfall is heavy, totalling around 481mm across the season with a monthly average of 160mm. Winds are generally light, averaging 6km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 25 to 29°C. Rainfall is heavy, totalling around 367mm across the season with a monthly average of 122mm. Winds are generally light, averaging 6km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 20 to 24°C. Precipitation is moderate at around 207mm for the season, averaging 69mm per month. Winds are generally light, averaging 7km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.
Best Time to Visit
The best time to visit Iwo Jima Air Base is during January, February, March and April, when the weather is most comfortable for travellers. During these months, average temperatures hover around 21°C with modest rainfall averaging 58mm per month. By contrast, July can be uncomfortably hot with temperatures reaching 29°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.
Monthly Climate Data
The table below shows monthly climate averages for Iwo Jima Air Base 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.
