Sines Municipality climate — normals and trends
Sines Municipality (Portugal) has a warm-summer mediterranean climate (Csb) under the Köppen-Geiger classification. Its mean annual temperature is 16.2 °C and it receives 553 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 August (21.2 °C on average) and the coldest is January (11.3 °C). Rainfall peaks in December.
Sines Municipality averages 0 frost days, 10 hot days (≥ 30 °C) and 78 rainy days per year.
Sines Municipality has warmed by +0.9 °C between 1940 and 2025, or +0.10 °C per decade. This trend is statistically significant.
The hottest day of the period reached 39.8 °C (on 21 July 1941) and the coldest 0.3 °C (on 13 January 1945).
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
Sines MunicipalitySetúbal District
- coords
- 37.96°, -8.87°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
16.2°C
Average daily high
19.9°C
Average daily low
13.0°C
Annual rainfall
553mm
Sunshine / day
10.7h
Mean relative humidity
75%
Average peak wind
21.8km/h
Seasonal range
9.9°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
10 d/yr
Rainy days (≥ 1 mm)
78 d/yr
Annual snowfall
0.0 cm
Average feels-like high
18.9 °C
Average feels-like low
11.2 °C
Average peak gust
38.3 km/h
Tropical nights (≥ 20 °C)
4 d/yr
Solar radiation
17.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+0.9 °C
since 1940
+0.1 °C per decade · r² = 0.28 · 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
39.8 °C
21 July 1941
Coldest day
0.3 °C
13 January 1945
Wettest day
80 mm
12 January 1956
Windiest day
76.3 km/h
15 February 1941
Strongest gust
115.9 km/h
15 February 1941
Hottest feels-like
40.2 °C
3 August 2018
Coldest feels-like
-6.2 °C
4 February 1956
Snowiest day
2.0 cm
2 February 1954
Sunniest day
14.6 h
17 June 2025
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 | 16.1 °C | +1.9 °C | 133 mm | +62 mm |
| Feb | 16.5 °C | +1.5 °C | 55 mm | -13 mm |
| Mar | 16.3 °C | -0.5 °C | 190 mm | +123 mm |
| Apr | 19.5 °C | +1.2 °C | 94 mm | +41 mm |
| May | 22.4 °C | +1.8 °C | 23 mm | -11 mm |
| Jun | 26.5 °C | +2.9 °C | 5 mm | -6 mm |
| Jul | 26.9 °C | +1.2 °C | 2 mm | +0 mm |
| Aug | 27.5 °C | +1.5 °C | 0 mm | -3 mm |
| Sep | 25.2 °C | +0.8 °C | 12 mm | -11 mm |
| Oct | 23.7 °C | +2.3 °C | 36 mm | -27 mm |
| Nov | 17.6 °C | +0.2 °C | 122 mm | +46 mm |
| Dec | 14.8 °C | -0.1 °C | 128 mm | +45 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 Sines Municipality?
Sines Municipality has a warm-summer mediterranean climate (Köppen Csb). Over 1940-2025, the average annual temperature is 16.2 °C and it receives 553 mm of precipitation per year.
What is the hottest day ever recorded in Sines Municipality?
The hottest day measured in Sines Municipality between 1940 and 2025 was 21 July 1941, reaching 39.8 °C.
What is the coldest day in Sines Municipality?
The coldest day measured in Sines Municipality between 1940 and 2025 was 13 January 1945, at 0.3 °C.
Does it snow in Sines Municipality?
Almost never: Sines Municipality sees virtually no snow, with about 0 frost days per year.
Has the climate of Sines Municipality warmed?
Yes: Sines Municipality warmed by +0.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Sines Municipality?
The wettest day measured in Sines Municipality between 1940 and 2025 was 12 January 1956, with 80 mm of rain in 24 hours.
What was the windiest day in Sines Municipality?
The windiest day measured in Sines Municipality between 1940 and 2025 was 15 February 1941, with winds reaching 76.3 km/h.
What is the warmest month in Sines Municipality?
The warmest month in Sines Municipality is August (21.2 °C on average); the coldest is January (11.3 °C).
How much does it rain in Sines Municipality?
Sines Municipality receives on average 553 mm of precipitation per year, spread over about 78 rainy days.
Is it sunny in Sines Municipality?
Sines Municipality gets on average 10.7 hours of sunshine per day, roughly 3,905 hours per year over 1940-2025.
What is the biggest single-day snowfall in Sines Municipality?
The heaviest 24-hour snowfall measured in Sines Municipality between 1940 and 2025 was 2 February 1954, with 2.0 cm.
Are there tropical nights in Sines Municipality?
Yes: Sines Municipality has on average 4 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Sines Municipality?
In Sines Municipality, between 1940 and 2025, the highest apparent temperature reached 40.2 °C on 3 August 2018, and the lowest was -6.2 °C on 4 February 1956.
Compare Sines Municipality with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Sines Municipality