Climate Overview
The climate in Grand-Santi is hot. The average annual temperature is 26°C and approximately 1993mm 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 22°C to 34°C. The warmest month is October, when average highs reach 34°C and the mean temperature sits around 28°C. July is the coolest month, with minimum temperatures around 22°C and an average of 26°C. Daily temperature variation is modest, with an average difference of 8°C between highs and lows.
Precipitation
Grand-Santi is a fairly wet location, receiving approximately 1993mm of precipitation annually, which averages out to around 166mm per month. The wettest month is May, averaging 431mm of rainfall. June and April also tend to see above-average precipitation. The driest month is October, with just 36mm. That's 395mm 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 2km/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 2km/h, though still comfortable for most outdoor activities. The calmest conditions occur in July, with average winds dropping to 1km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 1km/h gap between the calmest and windiest months.
Seasons
85 days until Autumn
It is currently summer in Grand-Santi, which began on June 21, 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 July near 22°C. Autumn is next, beginning on September 23, 2026 — 85 days from now.
Spring
Temperatures range from 23 to 31°C. Rainfall is heavy, totalling around 793mm across the season with a monthly average of 264mm. Winds are generally light, averaging 2km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 22 to 32°C. Rainfall is heavy, totalling around 600mm across the season with a monthly average of 200mm. Winds are generally light, averaging 1km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 23 to 34°C. Precipitation is moderate at around 202mm for the season, averaging 67mm per month. Winds are generally light, averaging 2km/h. Layered clothing works best as temperatures gradually cool — enjoy the crisp air and changing scenery.
Winter
Temperatures range from 23 to 30°C. Rainfall is heavy, totalling around 398mm across the season with a monthly average of 133mm. Winds are generally light, averaging 2km/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.
