Climate Insights for Grand-Lahou

The climate in Grand-Lahou is hot. The average annual temperature is 27°C and approximately 2094mm of precipitation falls per year. Grand-Lahou receives a notable amount of rainfall throughout the year, including during its driest month. Grand-Lahou sits near the equator, so seasonal temperature differences are minimal throughout the year.

Grand-Lahou has relatively stable temperatures year-round, staying within a 8°C range. The warmest month is March, when average highs reach 31°C and the mean temperature sits around 28°C. August is the coolest month, with minimum temperatures around 23°C and an average of 25°C. Daily temperature variation is modest, with an average difference of 5°C between highs and lows.

Grand-Lahou is a very wet location, receiving approximately 2094mm of precipitation annually, which averages out to around 175mm per month. The wettest month is June, averaging 382mm of rainfall. May and October also tend to see above-average precipitation. The driest month is August, with just 80mm. That's 302mm less than June, the wettest month. Precipitation varies noticeably between seasons, with the first half (January to June) of the year generally seeing more rainfall.

Grand-Lahou is relatively calm, with an average annual wind speed of 9km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is August, averaging 11km/h, though still comfortable for most outdoor activities. The calmest conditions occur in November, 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.

It is currently summer in Grand-Lahou, which began on June 21, 2026. Grand-Lahou sits near the equator, so the traditional four-season cycle is less pronounced. Temperatures remain relatively stable year-round. The warmest period peaks in March at around 31°C, while the coldest stretch bottoms out in August near 23°C. Autumn is next, beginning on September 23, 2026 (9 days from now).

The best time to visit Grand-Lahou is during August, when the weather is most comfortable for travellers. During these months, average temperatures hover around 25°C with modest rainfall averaging 80mm per month. By contrast, March can be uncomfortably hot with temperatures reaching 31°C. Despite being the best months overall, some rain is still likely. Pack a waterproof layer and plan a mix of indoor and outdoor activities.

The table below shows monthly climate averages for Grand-Lahou 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.