Ulianópolis climate — normals and trends
Ulianópolis (Brazil) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 26.6 °C and it receives 1,499 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 (28.7 °C on average) and the coldest is March (25.1 °C). Rainfall peaks in March.
Ulianópolis averages 0 frost days, 264 hot days (≥ 30 °C) and 179 rainy days per year.
Ulianópolis has warmed by +0.8 °C between 1940 and 2025, or +0.10 °C per decade. This trend is statistically significant.
The hottest day of the period reached 39.4 °C (on 18 October 1941) and the coldest 18.4 °C (on 11 July 1971).
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
UlianópolisPará
- coords
- -3.74°, -47.49°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
26.6°C
Average daily high
31.8°C
Average daily low
22.6°C
Annual rainfall
1,499mm
Sunshine / day
10.2h
Mean relative humidity
76%
Average peak wind
11.5km/h
Seasonal range
3.6°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
264 d/yr
Rainy days (≥ 1 mm)
179 d/yr
Annual snowfall
0.0 cm
Average feels-like high
36.3 °C
Average feels-like low
26.2 °C
Average peak gust
32.1 km/h
Tropical nights (≥ 20 °C)
363 d/yr
Solar radiation
18.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+0.8 °C
since 1940
+0.1 °C per decade · r² = 0.17 · 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
39.4 °C
18 October 1941
Coldest day
18.4 °C
11 July 1971
Wettest day
188 mm
16 January 1979
Windiest day
24.1 km/h
8 July 2022
Strongest gust
58.0 km/h
12 August 1970
Hottest feels-like
44.1 °C
14 November 2016
Coldest feels-like
19.1 °C
4 July 1974
Sunniest day
12.0 h
23 January 1953
Normals computed over complete calendar years 1940–2025.
A specific year
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Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 30.5 °C | +0.4 °C | 295 mm | +51 mm |
| Feb | 30.2 °C | +0.6 °C | 338 mm | +64 mm |
| Mar | 30.3 °C | +0.9 °C | 382 mm | +64 mm |
| Apr | 31.0 °C | +1.5 °C | 149 mm | -91 mm |
| May | 31.7 °C | +1.6 °C | 62 mm | -60 mm |
| Jun | 31.6 °C | +0.5 °C | 39 mm | +6 mm |
| Jul | 32.9 °C | +0.3 °C | 16 mm | -1 mm |
| Aug | 33.0 °C | -1.1 °C | 23 mm | +13 mm |
| Sep | 34.4 °C | -0.1 °C | 5 mm | -9 mm |
| Oct | 34.4 °C | -0.1 °C | 13 mm | -12 mm |
| Nov | 33.7 °C | 0.0 °C | 26 mm | -36 mm |
| Dec | 31.9 °C | 0.0 °C | 109 mm | -28 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 Ulianópolis?
Ulianópolis has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 26.6 °C and it receives 1,499 mm of precipitation per year.
What is the hottest day ever recorded in Ulianópolis?
The hottest day measured in Ulianópolis between 1940 and 2025 was 18 October 1941, reaching 39.4 °C.
What is the coldest day in Ulianópolis?
The coldest day measured in Ulianópolis between 1940 and 2025 was 11 July 1971, at 18.4 °C.
Does it snow in Ulianópolis?
Almost never: Ulianópolis sees virtually no snow, with about 0 frost days per year.
Has the climate of Ulianópolis warmed?
Yes: Ulianópolis warmed by +0.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Ulianópolis?
The wettest day measured in Ulianópolis between 1940 and 2025 was 16 January 1979, with 188 mm of rain in 24 hours.
What was the windiest day in Ulianópolis?
The windiest day measured in Ulianópolis between 1940 and 2025 was 8 July 2022, with winds reaching 24.1 km/h.
What is the warmest month in Ulianópolis?
The warmest month in Ulianópolis is October (28.7 °C on average); the coldest is March (25.1 °C).
How much does it rain in Ulianópolis?
Ulianópolis receives on average 1,499 mm of precipitation per year, spread over about 179 rainy days.
Is it sunny in Ulianópolis?
Ulianópolis gets on average 10.2 hours of sunshine per day, roughly 3,723 hours per year over 1940-2025.
Are there tropical nights in Ulianópolis?
Yes: Ulianópolis has on average 363 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Ulianópolis?
In Ulianópolis, between 1940 and 2025, the highest apparent temperature reached 44.1 °C on 14 November 2016, and the lowest was 19.1 °C on 4 July 1974.
Compare Ulianópolis with another city
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Nearby cities
The climate around Ulianópolis