Climate Overview
The climate in Oiapoque is hot. The average annual temperature is 26°C and approximately 2725mm of precipitation falls per year. Oiapoque receives a notable amount of rainfall throughout the year, including during its driest month. Oiapoque sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Oiapoque 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. July is the coolest month, with minimum temperatures around 23°C and an average of 26°C. Daily temperature variation is modest, with an average difference of 7°C between highs and lows.
Precipitation
Oiapoque is a very wet location, receiving approximately 2725mm of precipitation annually, which averages out to around 227mm per month. The wettest month is May, averaging 474mm of rainfall. April and January also tend to see above-average precipitation. The driest month is September, with just 32mm. That's 442mm 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
Oiapoque is relatively calm, with an average annual wind speed of 12km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is October, averaging 13km/h, though still comfortable for most outdoor activities. The calmest conditions occur in June, with average winds dropping to 10km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 3km/h between the calmest and windiest months.
Seasons
88 days until Summer
It is currently spring in Oiapoque, which began on March 20, 2026. Oiapoque 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 23°C. Summer is next, beginning on June 21, 2026 — 88 days from now.
Spring
Temperatures range from 23 to 29°C. Rainfall is heavy, totalling around 1073mm across the season with a monthly average of 358mm. Winds are generally light, averaging 12km/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 592mm across the season with a monthly average of 197mm. Winds are generally light, averaging 10km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 23 to 34°C. Precipitation is moderate at around 205mm for the season, averaging 68mm per month. Winds are generally light, averaging 12km/h. Layered clothing works best as temperatures gradually cool — enjoy the crisp air and changing scenery.
Winter
Temperatures range from 23 to 29°C. Rainfall is heavy, totalling around 855mm across the season with a monthly average of 285mm. Winds are generally light, averaging 12km/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 Oiapoque 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.
