Climate Insights for Henderson Field Civil Airport

The climate in Henderson Field Civil Airport is warm and mild. The average annual temperature is 22°C and approximately 806mm of precipitation falls per year. January is the wettest month, receiving around 123mm of rainfall. Henderson Field Civil Airport is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: September, August, July. The coldest months are February, March, January, when temperatures can drop to 18°C.

Henderson Field Civil Airport has relatively stable temperatures year-round, staying within a 9°C range. The warmest month is September, when average highs reach 27°C and the mean temperature sits around 26°C. February is the coolest month, with minimum temperatures around 18°C and an average of 19°C. Daily temperature variation is modest, with an average difference of 1°C between highs and lows. The sharpest temperature change occurs between May and June, with a 3°C shift in average temperatures.

Henderson Field Civil Airport is a moderately rainy area, receiving approximately 806mm of precipitation annually, which averages out to around 67mm per month. The wettest month is January, averaging 123mm of rainfall. August and July also tend to see above-average precipitation. The driest month is May, with just 29mm. That's 94mm less than January, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall.

Henderson Field Civil Airport is very windy, with an average annual wind speed of 30km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is January, averaging 40km/h, which can feel quite blustery and may affect outdoor activities. The calmest conditions occur in June, with average winds dropping to 23km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 17km/h gap between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 37km/h in winter, 30km/h in spring, 25km/h in summer, 28km/h in autumn.

It is currently spring in Henderson Field Civil Airport, which began on March 20, 2026. Henderson Field Civil Airport 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 September at around 27°C, while the coldest stretch bottoms out in February near 18°C. Summer is next, beginning on June 21, 2026 — 90 days from now.

The best time to visit Henderson Field Civil Airport is during February, March, April, May, June, October, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 21°C with modest rainfall averaging 57mm per month. By contrast, September can be uncomfortably hot with temperatures reaching 27°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

The table below shows monthly climate averages for Henderson Field Civil Airport 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.