Climate Insights for Serro

The climate in Serro is hot. The average annual temperature is 26°C and approximately 256mm of precipitation falls per year. December is the wettest month, receiving around 33mm of rainfall. Serro 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: November, October, December. The coldest months are September, August, July, when temperatures can drop to 19°C.

Temperatures in Serro vary considerably across the year, with a 22°C difference between the coldest and warmest months. November is the hottest month, with daytime highs reaching 41°C and an average of 34°C. September is the coolest month, with minimum temperatures around 19°C and an average of 22°C. Daily temperature variation is modest, with an average difference of 5°C between highs and lows. The sharpest temperature change occurs between September and October, with a 12°C shift in average temperatures.

Serro is a quite dry location, receiving approximately 256mm of precipitation annually, which averages out to around 21mm per month. The wettest month is January, averaging 33mm of rainfall. February and March also tend to see above-average precipitation. The driest month is October, with just 0mm. That's 33mm less than January, 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.

Serro 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 April, averaging 9km/h, though still comfortable for most outdoor activities. The calmest conditions occur in November, with average winds dropping to 2km/h, making it an ideal period for wind-sensitive activities. Wind speeds vary significantly across the year, with a 7km/h difference between the calmest and windiest months. This level of variation is worth factoring into travel plans. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 8km/h in winter, 4km/h in spring, 4km/h in summer, 8km/h in autumn.

It is currently winter in Serro, which began on June 21, 2026. Serro 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 November at around 41°C, while the coldest stretch bottoms out in September near 19°C. Spring is next, beginning on September 23, 2026 (16 days from now).

The best time to visit Serro is during April, May, June, July, August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 23°C with modest rainfall averaging 21mm per month. By contrast, November can be uncomfortably hot with temperatures reaching 41°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

The table below shows monthly climate averages for Serro 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.