Megara climate — normals and trends
Megara (Greece) has a hot-summer mediterranean climate (Csa) under the Köppen-Geiger classification. Its mean annual temperature is 17.0 °C and it receives 376 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 (26.1 °C on average) and the coldest is January (8.8 °C). Rainfall peaks in December.
Megara averages 1 frost days, 34 hot days (≥ 30 °C) and 60 rainy days per year.
Megara has warmed by +1.4 °C between 1940 and 2025, or +0.16 °C per decade. This trend is statistically significant.
The hottest day of the period reached 38.1 °C (on 7 July 1988) and the coldest -4.6 °C (on 24 January 2004).
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
MegaraAttica
- coords
- 37.99°, 23.34°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
17.0°C
Average daily high
19.9°C
Average daily low
14.4°C
Annual rainfall
376mm
Sunshine / day
10.2h
Mean relative humidity
67%
Average peak wind
14.7km/h
Seasonal range
17.3°C
Frost days (< 0 °C)
1 d/yr
Hot days (≥ 30 °C)
34 d/yr
Rainy days (≥ 1 mm)
60 d/yr
Annual snowfall
5.8 cm
Average feels-like high
19.3 °C
Average feels-like low
13.3 °C
Average peak gust
30.5 km/h
Tropical nights (≥ 20 °C)
93 d/yr
Solar radiation
16.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.4 °C
since 1940
+0.2 °C per decade · r² = 0.39 · 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
38.1 °C
7 July 1988
Coldest day
-4.6 °C
24 January 2004
Wettest day
99 mm
26 March 1998
Windiest day
45.6 km/h
22 February 1940
Strongest gust
94.3 km/h
22 March 1951
Hottest feels-like
41.4 °C
3 August 2021
Coldest feels-like
-10.0 °C
13 February 2004
Snowiest day
26.4 cm
26 March 1998
Sunniest day
14.6 h
27 June 2025
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 | 14.0 °C | +3.1 °C | 48 mm | -10 mm |
| Feb | 10.8 °C | -0.9 °C | 52 mm | +5 mm |
| Mar | 16.2 °C | +2.4 °C | 26 mm | -21 mm |
| Apr | 17.7 °C | 0.0 °C | 28 mm | +1 mm |
| May | 22.6 °C | 0.0 °C | 20 mm | +3 mm |
| Jun | 29.5 °C | +2.3 °C | 2 mm | -5 mm |
| Jul | 31.9 °C | +2.2 °C | 2 mm | -1 mm |
| Aug | 29.7 °C | +0.2 °C | 2 mm | -2 mm |
| Sep | 27.3 °C | +1.3 °C | 12 mm | -2 mm |
| Oct | 20.8 °C | -0.2 °C | 63 mm | +23 mm |
| Nov | 19.2 °C | +2.8 °C | 50 mm | -1 mm |
| Dec | 14.7 °C | +2.2 °C | 60 mm | -2 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 Megara?
Megara has a hot-summer mediterranean climate (Köppen Csa). Over 1940-2025, the average annual temperature is 17.0 °C and it receives 376 mm of precipitation per year.
What is the hottest day ever recorded in Megara?
The hottest day measured in Megara between 1940 and 2025 was 7 July 1988, reaching 38.1 °C.
What is the coldest day in Megara?
The coldest day measured in Megara between 1940 and 2025 was 24 January 2004, at -4.6 °C.
Does it snow in Megara?
Yes. Megara gets on average 5.8 cm of snow per year and has around 1 frost days.
Has the climate of Megara warmed?
Yes: Megara warmed by +1.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Megara?
The wettest day measured in Megara between 1940 and 2025 was 26 March 1998, with 99 mm of rain in 24 hours.
What was the windiest day in Megara?
The windiest day measured in Megara between 1940 and 2025 was 22 February 1940, with winds reaching 45.6 km/h.
What is the warmest month in Megara?
The warmest month in Megara is July (26.1 °C on average); the coldest is January (8.8 °C).
How much does it rain in Megara?
Megara receives on average 376 mm of precipitation per year, spread over about 60 rainy days.
Is it sunny in Megara?
Megara gets on average 10.2 hours of sunshine per day, roughly 3,723 hours per year over 1940-2025.
What is the biggest single-day snowfall in Megara?
The heaviest 24-hour snowfall measured in Megara between 1940 and 2025 was 26 March 1998, with 26.4 cm.
Are there tropical nights in Megara?
Yes: Megara has on average 93 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Megara?
In Megara, between 1940 and 2025, the highest apparent temperature reached 41.4 °C on 3 August 2021, and the lowest was -10.0 °C on 13 February 2004.
Compare Megara with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Megara