Climate Insights for Rotuma

The climate in Rotuma is hot. The average annual temperature is 27°C and approximately 3170mm of precipitation falls per year. Rotuma receives a notable amount of rainfall throughout the year, including during its driest month. Rotuma is in the Southern Hemisphere. The seasons are reversed — summer runs from December to February, while winter falls between June and August. The summer months are: February, March, April. The coldest months are August, September, October, when temperatures can drop to 26°C.

Rotuma has relatively stable temperatures year-round, staying within a 3°C range. The warmest month is February, when average highs reach 29°C and the mean temperature sits around 28°C. August is the coolest month, with minimum temperatures around 26°C and an average of 27°C. Daily temperature variation is modest, with an average difference of 2°C between highs and lows.

Rotuma is a very wet location, receiving approximately 3170mm of precipitation annually, which averages out to around 264mm per month. The wettest month is February, averaging 433mm of rainfall. January and December also tend to see above-average precipitation. The driest month is June, with just 168mm. That's 265mm less than February, the wettest month. Precipitation varies noticeably between seasons, with the first half (January to June) of the year generally seeing more rainfall.

Rotuma is moderately windy, with an average annual wind speed of 27km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is July, averaging 33km/h, which can feel quite blustery and may affect outdoor activities. The calmest conditions occur in March, with average winds dropping to 21km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 12km/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 32km/h in winter, 28km/h in spring, 24km/h in summer, 24km/h in autumn.

It is currently autumn in Rotuma, which began on March 20, 2026. Rotuma is in the Southern Hemisphere, where the seasons are reversed — spring starts in September, summer in December, autumn in March, and winter in June. The warmest period peaks in February at around 29°C, while the coldest stretch bottoms out in August near 26°C. Winter is next, beginning on June 21, 2026 — 89 days from now.

The table below shows monthly climate averages for Rotuma 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.