Oiapoque climate — normals and trends
Oiapoque (Brazil) has a tropical monsoon climate (Am) under the Köppen-Geiger classification. Its mean annual temperature is 25.3 °C and it receives 2,646 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is October (26.7 °C on average) and the coldest is January (24.5 °C). Rainfall peaks in May.
Oiapoque averages 0 frost days, 157 hot days (≥ 30 °C) and 277 rainy days per year.
Oiapoque has warmed by +2.0 °C between 1940 and 2025, or +0.23 °C per decade. This trend is statistically significant.
The hottest day of the period reached 36.8 °C (on 4 October 2010) and the coldest 18.9 °C (on 24 December 1960).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
OiapoqueAmapá
- coords
- 3.84°, -51.84°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
25.3°C
Average daily high
29.6°C
Average daily low
22.6°C
Annual rainfall
2,646mm
Sunshine / day
9.2h
Mean relative humidity
87%
Average peak wind
11.6km/h
Seasonal range
2.2°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
157 d/yr
Rainy days (≥ 1 mm)
277 d/yr
Annual snowfall
0.0 cm
Average feels-like high
34.4 °C
Average feels-like low
26.7 °C
Average peak gust
32.2 km/h
Tropical nights (≥ 20 °C)
364 d/yr
Solar radiation
16.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.0 °C
since 1940
+0.2 °C per decade · r² = 0.79 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
36.8 °C
4 October 2010
Coldest day
18.9 °C
24 December 1960
Wettest day
203 mm
26 June 2013
Windiest day
21.5 km/h
1 March 1960
Strongest gust
54.0 km/h
13 September 2007
Hottest feels-like
42.3 °C
1 October 2024
Coldest feels-like
21.0 °C
24 December 1960
Sunniest day
12.1 h
3 July 2015
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 29.4 °C | +1.3 °C | 241 mm | -61 mm |
| Feb | 29.2 °C | +0.9 °C | 220 mm | -41 mm |
| Mar | 29.6 °C | +0.7 °C | 340 mm | +95 mm |
| Apr | 29.8 °C | +0.9 °C | 445 mm | +148 mm |
| May | 29.3 °C | +0.8 °C | 511 mm | +117 mm |
| Jun | 29.6 °C | +1.0 °C | 326 mm | +27 mm |
| Jul | 30.9 °C | +1.6 °C | 157 mm | -57 mm |
| Aug | 31.5 °C | +1.0 °C | 177 mm | +58 mm |
| Sep | 33.2 °C | +1.3 °C | 23 mm | -34 mm |
| Oct | 33.5 °C | +1.1 °C | 49 mm | -16 mm |
| Nov | 32.3 °C | +1.3 °C | 75 mm | -60 mm |
| Dec | 29.7 °C | +0.7 °C | 261 mm | +1 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Oiapoque?
Oiapoque has a tropical monsoon climate (Köppen Am). Over 1940-2025, the average annual temperature is 25.3 °C and it receives 2,646 mm of precipitation per year.
What is the hottest day ever recorded in Oiapoque?
The hottest day measured in Oiapoque between 1940 and 2025 was 4 October 2010, reaching 36.8 °C.
What is the coldest day in Oiapoque?
The coldest day measured in Oiapoque between 1940 and 2025 was 24 December 1960, at 18.9 °C.
Does it snow in Oiapoque?
Almost never: Oiapoque sees virtually no snow, with about 0 frost days per year.
Has the climate of Oiapoque warmed?
Yes: Oiapoque warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Oiapoque?
The wettest day measured in Oiapoque between 1940 and 2025 was 26 June 2013, with 203 mm of rain in 24 hours.
What was the windiest day in Oiapoque?
The windiest day measured in Oiapoque between 1940 and 2025 was 1 March 1960, with winds reaching 21.5 km/h.
What is the warmest month in Oiapoque?
The warmest month in Oiapoque is October (26.7 °C on average); the coldest is January (24.5 °C).
How much does it rain in Oiapoque?
Oiapoque receives on average 2,646 mm of precipitation per year, spread over about 277 rainy days.
Is it sunny in Oiapoque?
Oiapoque gets on average 9.2 hours of sunshine per day, roughly 3,358 hours per year over 1940-2025.
Are there tropical nights in Oiapoque?
Yes: Oiapoque has on average 364 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Oiapoque?
In Oiapoque, between 1940 and 2025, the highest apparent temperature reached 42.3 °C on 1 October 2024, and the lowest was 21.0 °C on 24 December 1960.
Compare Oiapoque with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Oiapoque