Climate Overview
The climate in Grand-Santi is hot. The average annual temperature is 26°C and approximately 2238mm of precipitation falls per year. Grand-Santi receives a notable amount of rainfall throughout the year, including during its driest month. Grand-Santi sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Grand-Santi sees moderate temperature variation throughout the year, ranging from 23°C to 34°C. The warmest month is October, when average highs reach 34°C and the mean temperature sits around 28°C. January 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 8°C between highs and lows.
Precipitation
Grand-Santi is a very wet location, receiving approximately 2238mm of precipitation annually, which averages out to around 187mm per month. The wettest month is May, averaging 433mm of rainfall. April and June also tend to see above-average precipitation. The driest month is October, with just 39mm. That's 394mm 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.
Wind
Grand-Santi is relatively calm, with an average annual wind speed of 7km/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 8km/h, though still comfortable for most outdoor activities. The calmest conditions occur in July, with average winds dropping to 5km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 3km/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 8km/h in winter, 7km/h in spring, 5km/h in summer, 7km/h in autumn.
Seasons
87 days until Winter
It is currently autumn in Grand-Santi, which began on September 23, 2026. Grand-Santi sits near the equator, so the traditional four-season cycle is less pronounced. Temperatures remain relatively stable year-round. The warmest period peaks in October at around 34°C, while the coldest stretch bottoms out in January near 23°C. Winter is next, beginning on December 21, 2026 (87 days from now).
Spring
Temperatures range from 23 to 31°C. Rainfall is heavy, totalling around 924mm across the season with a monthly average of 308mm. Winds are generally light, averaging 7km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 23 to 32°C. Rainfall is heavy, totalling around 604mm across the season with a monthly average of 201mm. Winds are generally light, averaging 5km/h. Light, breathable clothing is ideal. Perfect conditions for outdoor activities.
Autumn
Temperatures range from 23 to 34°C. Precipitation is moderate at around 193mm for the season, averaging 64mm per month. Winds are generally light, averaging 7km/h. Layered clothing works best as temperatures gradually cool. Enjoy the crisp air and changing scenery.
Winter
Temperatures range from 23 to 31°C. Rainfall is heavy, totalling around 517mm across the season with a monthly average of 172mm. Winds are generally light, averaging 8km/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 Grand-Santi 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.
