Chaves climate — normals and trends
Chaves has a warm-summer mediterranean climate, averaging 12.0 °C annually with 787 mm of rain per year.
Climate normals · ERA5
ChavesVila Real District
- coords
- 41.74°, -7.47°
- period
- 1940–2025 · 86 yrs
The normals for this period
The average of every indicator across the whole window: temperature, water, sky, wind and notable days.
Mean daily temperature
12.0°C
Average daily high
16.9°C
Average daily low
7.4°C
Annual rainfall
787mm
Sunshine / day
9.5h
Mean relative humidity
74%
Average peak wind
13.0km/h
Seasonal range
15.0°C
Frost days (< 0 °C)
32 d/yr
Hot days (≥ 30 °C)
15 d/yr
Rainy days (≥ 1 mm)
102 d/yr
Annual snowfall
9.9 cm
Average feels-like high
15.4 °C
Average feels-like low
5.6 °C
Average peak gust
33.9 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
15.4 MJ/m²
Has the climate changed?
What the yearly averages say about warming here, and whether the slope is statistically solid.
+1.6 °C
since 1940
+0.2 °C per decade · r² = 0.35 · 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).
Climate month by month
How an average year unfolds: when it rains, when it turns hot, when the sun is out.
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
The most extreme days ever measured here, then the year-by-year detail.
Hottest day
40.3 °C
14 July 2022
Coldest day
-17.6 °C
4 February 1963
Wettest day
86 mm
20 January 1941
Windiest day
41.8 km/h
15 February 1941
Strongest gust
122.0 km/h
15 February 1941
Hottest feels-like
41.6 °C
14 July 2022
Coldest feels-like
-21.6 °C
4 February 1963
Snowiest day
16.2 cm
23 February 1956
Sunniest day
15.0 h
14 June 1940
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and compare it with the normal: warmer, drier, more extreme?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 10.4 °C | +1.9 °C | 200 mm | +111 mm |
| Feb | 11.5 °C | +1.4 °C | 48 mm | -35 mm |
| Mar | 12.4 °C | -0.6 °C | 124 mm | +44 mm |
| Apr | 16.9 °C | +1.7 °C | 114 mm | +40 mm |
| May | 19.8 °C | +1.5 °C | 76 mm | +9 mm |
| Jun | 27.0 °C | +4.1 °C | 21 mm | -18 mm |
| Jul | 28.7 °C | +2.3 °C | 3 mm | -14 mm |
| Aug | 29.9 °C | +3.5 °C | 5 mm | -12 mm |
| Sep | 23.4 °C | +0.4 °C | 16 mm | -28 mm |
| Oct | 20.3 °C | +2.8 °C | 81 mm | -9 mm |
| Nov | 12.4 °C | +0.4 °C | 211 mm | +119 mm |
| Dec | 9.2 °C | +0.2 °C | 115 mm | +19 mm |
The year's extremes
What was the weather like that day?
The weather actually measured on a given date, anywhere in the covered window.
Climate at a glance
What these normals say about the place, in a few sentences, and the notions needed to read them.
Chaves (Portugal) has a warm-summer mediterranean climate (Csb) under the Köppen-Geiger classification. Its mean annual temperature is 12.0 °C and it receives 787 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 July (20.0 °C on average) and the coldest is January (5.0 °C). Rainfall peaks in December.
Chaves averages 32 frost days, 15 hot days (≥ 30 °C) and 102 rainy days per year.
Chaves has warmed by +1.6 °C between 1940 and 2025, or +0.19 °C per decade. This trend is statistically significant.
The number of frost days there went from about 45 to 19 per year over the period.
The hottest day of the period reached 40.3 °C (on 14 July 2022) and the coldest -17.6 °C (on 4 February 1963).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Compare Chaves with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Chaves
Other cities — Portugal
Frequently asked questions
What is the climate of Chaves?
Chaves has a warm-summer mediterranean climate (Köppen Csb). Over 1940-2025, the average annual temperature is 12.0 °C and it receives 787 mm of precipitation per year.
What is the hottest day ever recorded in Chaves?
The hottest day measured in Chaves between 1940 and 2025 was 14 July 2022, reaching 40.3 °C.
What is the coldest day in Chaves?
The coldest day measured in Chaves between 1940 and 2025 was 4 February 1963, at -17.6 °C.
Does it snow in Chaves?
Yes. Chaves gets on average 9.9 cm of snow per year and has around 32 frost days.
Has the climate of Chaves warmed?
Yes: Chaves warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Chaves?
The wettest day measured in Chaves between 1940 and 2025 was 20 January 1941, with 86 mm of rain in 24 hours.
What was the windiest day in Chaves?
The windiest day measured in Chaves between 1940 and 2025 was 15 February 1941, with winds reaching 41.8 km/h.
What is the warmest month in Chaves?
The warmest month in Chaves is July (20.0 °C on average); the coldest is January (5.0 °C).
How much does it rain in Chaves?
Chaves receives on average 787 mm of precipitation per year, spread over about 102 rainy days.
Is it sunny in Chaves?
Chaves gets on average 9.5 hours of sunshine per day, roughly 3,468 hours per year over 1940-2025.
What is the biggest single-day snowfall in Chaves?
The heaviest 24-hour snowfall measured in Chaves between 1940 and 2025 was 23 February 1956, with 16.2 cm.
Are there tropical nights in Chaves?
Yes: Chaves has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Chaves?
In Chaves, between 1940 and 2025, the highest apparent temperature reached 41.6 °C on 14 July 2022, and the lowest was -21.6 °C on 4 February 1963.
These forecasts and records come from our own weather API. Developer documentation →