Climate Insights for Fonseca

The climate in Fonseca is warm and mild. The average annual temperature is 24°C and approximately 2238mm of precipitation falls per year. Fonseca receives a notable amount of rainfall throughout the year, including during its driest month. Fonseca is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, June. The coldest months are January, February, March, when temperatures can drop to 19°C.

Fonseca sees moderate temperature variation throughout the year, ranging from 19°C to 30°C. The warmest month is August, when average highs reach 30°C and the mean temperature sits around 25°C. January is the coolest month, with minimum temperatures around 19°C and an average of 23°C. Daily temperature variation is modest, with an average difference of 8°C between highs and lows.

Fonseca is a very wet location, receiving approximately 2238mm of precipitation annually, which averages out to around 186mm per month. The wettest month is May, averaging 317mm of rainfall. October and April also tend to see above-average precipitation. The driest month is January, with just 47mm. That's 269mm less than May, 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.

Fonseca is relatively calm, with an average annual wind speed of 8km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is February, averaging 11km/h, though still comfortable for most outdoor activities. The calmest conditions occur in October, with average winds dropping to 6km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 5km/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 10km/h in winter, 8km/h in spring, 7km/h in summer, 6km/h in autumn.

It is currently spring in Fonseca, which began on March 20, 2026. Fonseca 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 August at around 30°C, while the coldest stretch bottoms out in January near 19°C. Summer is next, beginning on June 21, 2026 — 89 days from now.

The best time to visit Fonseca is during January, February and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 23°C with modest rainfall averaging 57mm per month. By contrast, August can be uncomfortably hot with temperatures reaching 30°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 Fonseca 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.