Seydi climate — normals and trends
Seydi (Turkmenistan) has a cold desert climate (BWk) under the Köppen-Geiger classification. Its mean annual temperature is 16.5 °C and it receives 111 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 (32.2 °C on average) and the coldest is January (1.2 °C). Rainfall peaks in March.
Seydi averages 74 frost days, 135 hot days (≥ 30 °C) and 27 rainy days per year.
Seydi has warmed by +1.1 °C between 1940 and 2025, or +0.13 °C per decade. This trend is statistically significant.
The number of frost days there went from about 84 to 64 per year over the period.
The hottest day of the period reached 48.0 °C (on 29 July 1983) and the coldest -26.3 °C (on 12 February 1969).
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
SeydiMary
- coords
- 39.48°, 62.91°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
16.5°C
Average daily high
22.7°C
Average daily low
10.2°C
Annual rainfall
111mm
Sunshine / day
10.5h
Mean relative humidity
46%
Average peak wind
22.7km/h
Seasonal range
31.0°C
Frost days (< 0 °C)
74 d/yr
Hot days (≥ 30 °C)
135 d/yr
Rainy days (≥ 1 mm)
27 d/yr
Annual snowfall
9.4 cm
Average feels-like high
19.2 °C
Average feels-like low
6.2 °C
Average peak gust
36.0 km/h
Tropical nights (≥ 20 °C)
91 d/yr
Solar radiation
18.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.1 °C
since 1940
+0.1 °C per decade · r² = 0.11 · p = 0.002
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
48.0 °C
29 July 1983
Coldest day
-26.3 °C
12 February 1969
Wettest day
24 mm
17 March 2022
Windiest day
57.7 km/h
20 February 2008
Strongest gust
99.7 km/h
20 February 2008
Hottest feels-like
47.6 °C
7 July 2021
Coldest feels-like
-33.1 °C
27 January 1969
Snowiest day
9.6 cm
26 February 1978
Sunniest day
14.0 h
3 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 | 8.2 °C | +1.9 °C | 4 mm | -11 mm |
| Feb | 8.8 °C | -0.5 °C | 30 mm | +12 mm |
| Mar | 19.8 °C | +3.9 °C | 2 mm | -24 mm |
| Apr | 29.6 °C | +5.3 °C | 11 mm | -7 mm |
| May | 34.7 °C | +3.6 °C | 0 mm | -7 mm |
| Jun | 36.9 °C | +0.5 °C | 0 mm | -1 mm |
| Jul | 40.5 °C | +2.1 °C | 0 mm | -0 mm |
| Aug | 37.8 °C | +1.4 °C | 0 mm | -0 mm |
| Sep | 31.8 °C | +1.1 °C | 0 mm | -1 mm |
| Oct | 25.8 °C | +3.5 °C | 0 mm | -5 mm |
| Nov | 17.5 °C | +3.8 °C | 0 mm | -9 mm |
| Dec | 10.0 °C | +2.7 °C | 18 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 Seydi?
Seydi has a cold desert climate (Köppen BWk). Over 1940-2025, the average annual temperature is 16.5 °C and it receives 111 mm of precipitation per year.
What is the hottest day ever recorded in Seydi?
The hottest day measured in Seydi between 1940 and 2025 was 29 July 1983, reaching 48.0 °C.
What is the coldest day in Seydi?
The coldest day measured in Seydi between 1940 and 2025 was 12 February 1969, at -26.3 °C.
Does it snow in Seydi?
Yes. Seydi gets on average 9.4 cm of snow per year and has around 74 frost days.
Has the climate of Seydi warmed?
Yes: Seydi warmed by +1.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Seydi?
The wettest day measured in Seydi between 1940 and 2025 was 17 March 2022, with 24 mm of rain in 24 hours.
What was the windiest day in Seydi?
The windiest day measured in Seydi between 1940 and 2025 was 20 February 2008, with winds reaching 57.7 km/h.
What is the warmest month in Seydi?
The warmest month in Seydi is July (32.2 °C on average); the coldest is January (1.2 °C).
How much does it rain in Seydi?
Seydi receives on average 111 mm of precipitation per year, spread over about 27 rainy days.
Is it sunny in Seydi?
Seydi gets on average 10.5 hours of sunshine per day, roughly 3,833 hours per year over 1940-2025.
What is the biggest single-day snowfall in Seydi?
The heaviest 24-hour snowfall measured in Seydi between 1940 and 2025 was 26 February 1978, with 9.6 cm.
Are there tropical nights in Seydi?
Yes: Seydi has on average 91 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Seydi?
In Seydi, between 1940 and 2025, the highest apparent temperature reached 47.6 °C on 7 July 2021, and the lowest was -33.1 °C on 27 January 1969.
Compare Seydi with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Seydi