Orchomenos climate — normals and trends
Orchomenos (Greece) has a hot-summer mediterranean climate (Csa) under the Köppen-Geiger classification. Its mean annual temperature is 15.2 °C and it receives 659 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 (25.7 °C on average) and the coldest is January (5.5 °C). Rainfall peaks in December.
Orchomenos averages 24 frost days, 66 hot days (≥ 30 °C) and 98 rainy days per year.
Orchomenos has warmed by +1.5 °C between 1940 and 2025, or +0.17 °C per decade. This trend is statistically significant.
The number of frost days there went from about 28 to 20 per year over the period.
The hottest day of the period reached 44.0 °C (on 24 August 1958) and the coldest -17.3 °C (on 2 January 1942).
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
OrchomenosCentral Greece
- coords
- 38.49°, 22.98°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
15.2°C
Average daily high
20.7°C
Average daily low
10.1°C
Annual rainfall
659mm
Sunshine / day
10.1h
Mean relative humidity
69%
Average peak wind
11.0km/h
Seasonal range
20.2°C
Frost days (< 0 °C)
24 d/yr
Hot days (≥ 30 °C)
66 d/yr
Rainy days (≥ 1 mm)
98 d/yr
Annual snowfall
40.6 cm
Average feels-like high
20.0 °C
Average feels-like low
8.9 °C
Average peak gust
33.3 km/h
Tropical nights (≥ 20 °C)
27 d/yr
Solar radiation
16.6 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.5 °C
since 1940
+0.2 °C per decade · r² = 0.36 · 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
44.0 °C
24 August 1958
Coldest day
-17.3 °C
2 January 1942
Wettest day
103 mm
26 March 1998
Windiest day
32.7 km/h
29 April 1987
Strongest gust
97.6 km/h
15 February 2005
Hottest feels-like
44.9 °C
7 July 1988
Coldest feels-like
-22.0 °C
2 January 1942
Snowiest day
66.6 cm
26 March 1998
Sunniest day
14.7 h
25 June 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 | 13.6 °C | +3.6 °C | 68 mm | -14 mm |
| Feb | 10.0 °C | -1.5 °C | 69 mm | +0 mm |
| Mar | 17.5 °C | +3.2 °C | 62 mm | -10 mm |
| Apr | 18.8 °C | -0.3 °C | 115 mm | +64 mm |
| May | 24.6 °C | +0.1 °C | 71 mm | +22 mm |
| Jun | 31.3 °C | +1.7 °C | 15 mm | -19 mm |
| Jul | 35.1 °C | +3.4 °C | 31 mm | +8 mm |
| Aug | 31.6 °C | +0.4 °C | 22 mm | +1 mm |
| Sep | 28.8 °C | +1.7 °C | 16 mm | -27 mm |
| Oct | 20.7 °C | -0.7 °C | 58 mm | -7 mm |
| Nov | 18.9 °C | +2.7 °C | 49 mm | -17 mm |
| Dec | 13.4 °C | +1.8 °C | 93 mm | +7 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 Orchomenos?
Orchomenos has a hot-summer mediterranean climate (Köppen Csa). Over 1940-2025, the average annual temperature is 15.2 °C and it receives 659 mm of precipitation per year.
What is the hottest day ever recorded in Orchomenos?
The hottest day measured in Orchomenos between 1940 and 2025 was 24 August 1958, reaching 44.0 °C.
What is the coldest day in Orchomenos?
The coldest day measured in Orchomenos between 1940 and 2025 was 2 January 1942, at -17.3 °C.
Does it snow in Orchomenos?
Yes. Orchomenos gets on average 40.6 cm of snow per year and has around 24 frost days.
Has the climate of Orchomenos warmed?
Yes: Orchomenos warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Orchomenos?
The wettest day measured in Orchomenos between 1940 and 2025 was 26 March 1998, with 103 mm of rain in 24 hours.
What was the windiest day in Orchomenos?
The windiest day measured in Orchomenos between 1940 and 2025 was 29 April 1987, with winds reaching 32.7 km/h.
What is the warmest month in Orchomenos?
The warmest month in Orchomenos is July (25.7 °C on average); the coldest is January (5.5 °C).
How much does it rain in Orchomenos?
Orchomenos receives on average 659 mm of precipitation per year, spread over about 98 rainy days.
Is it sunny in Orchomenos?
Orchomenos gets on average 10.1 hours of sunshine per day, roughly 3,687 hours per year over 1940-2025.
What is the biggest single-day snowfall in Orchomenos?
The heaviest 24-hour snowfall measured in Orchomenos between 1940 and 2025 was 26 March 1998, with 66.6 cm.
Are there tropical nights in Orchomenos?
Yes: Orchomenos has on average 27 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Orchomenos?
In Orchomenos, between 1940 and 2025, the highest apparent temperature reached 44.9 °C on 7 July 1988, and the lowest was -22.0 °C on 2 January 1942.
Compare Orchomenos with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Orchomenos