Borba climate — normals and trends
Borba (Brazil) has a tropical rainforest climate (Af) under the Köppen-Geiger classification. Its mean annual temperature is 26.2 °C and it receives 2,408 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 (27.1 °C on average) and the coldest is January (25.6 °C). Rainfall peaks in March.
Borba averages 0 frost days, 202 hot days (≥ 30 °C) and 289 rainy days per year.
Borba has warmed by +1.6 °C between 1940 and 2025, or +0.19 °C per decade. This trend is statistically significant.
The hottest day of the period reached 39.2 °C (on 10 October 2023) and the coldest 16.6 °C (on 18 July 1975).
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
BorbaAmazonas
- coords
- -4.39°, -59.59°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
26.2°C
Average daily high
30.3°C
Average daily low
23.4°C
Annual rainfall
2,408mm
Sunshine / day
9.3h
Mean relative humidity
87%
Average peak wind
8.4km/h
Seasonal range
1.5°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
202 d/yr
Rainy days (≥ 1 mm)
289 d/yr
Annual snowfall
0.0 cm
Average feels-like high
36.8 °C
Average feels-like low
28.1 °C
Average peak gust
27.1 km/h
Tropical nights (≥ 20 °C)
364 d/yr
Solar radiation
16.6 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.6 °C
since 1940
+0.2 °C per decade · r² = 0.63 · 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
39.2 °C
10 October 2023
Coldest day
16.6 °C
18 July 1975
Wettest day
162 mm
14 March 2007
Windiest day
24.8 km/h
21 January 1965
Strongest gust
52.9 km/h
21 January 1965
Hottest feels-like
45.1 °C
26 September 2009
Coldest feels-like
15.1 °C
18 July 1975
Sunniest day
12.0 h
1 December 1940
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 | 30.5 °C | +1.0 °C | 212 mm | -80 mm |
| Feb | 29.9 °C | +0.4 °C | 472 mm | +188 mm |
| Mar | 30.0 °C | +0.4 °C | 337 mm | +13 mm |
| Apr | 30.9 °C | +1.3 °C | 224 mm | -79 mm |
| May | 30.7 °C | +1.1 °C | 113 mm | -106 mm |
| Jun | 30.9 °C | +1.0 °C | 111 mm | -3 mm |
| Jul | 32.0 °C | +1.6 °C | 13 mm | -66 mm |
| Aug | 32.5 °C | +1.1 °C | 60 mm | -31 mm |
| Sep | 32.2 °C | +0.6 °C | 112 mm | -14 mm |
| Oct | 31.5 °C | -0.1 °C | 236 mm | +90 mm |
| Nov | 32.1 °C | +1.1 °C | 233 mm | +51 mm |
| Dec | 30.9 °C | +0.8 °C | 360 mm | +113 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 Borba?
Borba has a tropical rainforest climate (Köppen Af). Over 1940-2025, the average annual temperature is 26.2 °C and it receives 2,408 mm of precipitation per year.
What is the hottest day ever recorded in Borba?
The hottest day measured in Borba between 1940 and 2025 was 10 October 2023, reaching 39.2 °C.
What is the coldest day in Borba?
The coldest day measured in Borba between 1940 and 2025 was 18 July 1975, at 16.6 °C.
Does it snow in Borba?
Almost never: Borba sees virtually no snow, with about 0 frost days per year.
Has the climate of Borba warmed?
Yes: Borba warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Borba?
The wettest day measured in Borba between 1940 and 2025 was 14 March 2007, with 162 mm of rain in 24 hours.
What was the windiest day in Borba?
The windiest day measured in Borba between 1940 and 2025 was 21 January 1965, with winds reaching 24.8 km/h.
What is the warmest month in Borba?
The warmest month in Borba is October (27.1 °C on average); the coldest is January (25.6 °C).
How much does it rain in Borba?
Borba receives on average 2,408 mm of precipitation per year, spread over about 289 rainy days.
Is it sunny in Borba?
Borba gets on average 9.3 hours of sunshine per day, roughly 3,395 hours per year over 1940-2025.
Are there tropical nights in Borba?
Yes: Borba has on average 364 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Borba?
In Borba, between 1940 and 2025, the highest apparent temperature reached 45.1 °C on 26 September 2009, and the lowest was 15.1 °C on 18 July 1975.
Compare Borba with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Borba