Climate Overview
The climate in Ross-Bétio is hot. The average annual temperature is 28°C and approximately 138mm of precipitation falls per year. September is the wettest month, receiving around 71mm of rainfall. Ross-Bétio is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: October, April, January. The coldest months are March, May, February, when temperatures can drop to 20°C.
Temperature
Ross-Bétio sees moderate temperature variation throughout the year, ranging from 20°C to 37°C. October is the hottest month, with daytime highs reaching 37°C and an average of 30°C. March is the coolest month, with minimum temperatures around 20°C and an average of 26°C. On average, daily temperatures fluctuate by about 12°C between overnight lows and afternoon highs.
Precipitation
Ross-Bétio is a quite dry location, receiving approximately 138mm of precipitation annually, which averages out to around 12mm per month. The wettest month is September, averaging 71mm of rainfall. August and July also tend to see above-average precipitation. The driest month is January, with just 0mm. That's 71mm less than September, 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
Ross-Bétio is relatively calm, with an average annual wind speed of 4km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is April, averaging 5km/h, though still comfortable for most outdoor activities. The calmest conditions occur in September, with average winds dropping to 3km/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
63 days until Autumn
It is currently summer in Ross-Bétio, which began on June 21, 2026. Ross-Bétio 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 October at around 37°C, while the coldest stretch bottoms out in March near 20°C. Autumn is next, beginning on September 23, 2026 — 63 days from now.
Spring
Temperatures range from 20 to 36°C. Precipitation is minimal, with only around 0mm for the entire season. Winds are generally light, averaging 5km/h. Light layers work well as temperatures warm through the season — a great time to be outdoors.
Summer
Temperatures range from 22 to 34°C. Rainfall is relatively light, with around 65mm over the season and a monthly average of 22mm. Winds are generally light, averaging 4km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 23 to 37°C. Rainfall is relatively light, with around 73mm over the season and a monthly average of 24mm. Winds are generally light, averaging 4km/h. Layered clothing works best as temperatures gradually cool — enjoy the crisp air and changing scenery.
Winter
Temperatures range from 21 to 35°C. Precipitation is minimal, with only around 0mm for the entire season. Winds are generally light, averaging 5km/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 Ross-Bétio 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.