Dergaon climate — normals and trends
Dergaon (India) has a humid subtropical, dry winter climate (Cwa) under the Köppen-Geiger classification. Its mean annual temperature is 23.9 °C and it receives 2,823 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 (28.6 °C on average) and the coldest is January (16.9 °C). Rainfall peaks in July.
Dergaon averages 0 frost days, 147 hot days (≥ 30 °C) and 188 rainy days per year.
Dergaon has warmed by +1.3 °C between 1940 and 2025, or +0.15 °C per decade. This trend is statistically significant.
The hottest day of the period reached 39.5 °C (on 4 June 1979) and the coldest 5.0 °C (on 28 December 1961).
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
DergaonAssam
- coords
- 26.70°, 93.97°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
23.9°C
Average daily high
28.4°C
Average daily low
20.3°C
Annual rainfall
2,823mm
Sunshine / day
9.5h
Mean relative humidity
80%
Average peak wind
8.4km/h
Seasonal range
11.7°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
147 d/yr
Rainy days (≥ 1 mm)
188 d/yr
Annual snowfall
0.0 cm
Average feels-like high
32.3 °C
Average feels-like low
23.4 °C
Average peak gust
22.9 km/h
Tropical nights (≥ 20 °C)
204 d/yr
Solar radiation
15.3 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.3 °C
since 1940
+0.2 °C per decade · r² = 0.50 · 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
39.5 °C
4 June 1979
Coldest day
5.0 °C
28 December 1961
Wettest day
182 mm
19 July 1999
Windiest day
38.0 km/h
1 October 1966
Strongest gust
74.2 km/h
1 October 1966
Hottest feels-like
49.4 °C
23 September 2024
Coldest feels-like
3.1 °C
28 December 1961
Sunniest day
13.2 h
6 July 1979
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 | 25.3 °C | +2.3 °C | 17 mm | -0 mm |
| Feb | 25.1 °C | +0.3 °C | 23 mm | -8 mm |
| Mar | 27.7 °C | -0.2 °C | 85 mm | -5 mm |
| Apr | 30.7 °C | +1.9 °C | 136 mm | -107 mm |
| May | 30.5 °C | +0.5 °C | 347 mm | -32 mm |
| Jun | 33.6 °C | +2.2 °C | 287 mm | -236 mm |
| Jul | 34.6 °C | +3.0 °C | 353 mm | -185 mm |
| Aug | 32.6 °C | +0.8 °C | 313 mm | -164 mm |
| Sep | 33.9 °C | +2.8 °C | 219 mm | -136 mm |
| Oct | 31.9 °C | +2.3 °C | 69 mm | -71 mm |
| Nov | 28.7 °C | +1.8 °C | 61 mm | +41 mm |
| Dec | 25.6 °C | +1.6 °C | 0 mm | -10 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 Dergaon?
Dergaon has a humid subtropical, dry winter climate (Köppen Cwa). Over 1940-2025, the average annual temperature is 23.9 °C and it receives 2,823 mm of precipitation per year.
What is the hottest day ever recorded in Dergaon?
The hottest day measured in Dergaon between 1940 and 2025 was 4 June 1979, reaching 39.5 °C.
What is the coldest day in Dergaon?
The coldest day measured in Dergaon between 1940 and 2025 was 28 December 1961, at 5.0 °C.
Does it snow in Dergaon?
Almost never: Dergaon sees virtually no snow, with about 0 frost days per year.
Has the climate of Dergaon warmed?
Yes: Dergaon warmed by +1.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Dergaon?
The wettest day measured in Dergaon between 1940 and 2025 was 19 July 1999, with 182 mm of rain in 24 hours.
What was the windiest day in Dergaon?
The windiest day measured in Dergaon between 1940 and 2025 was 1 October 1966, with winds reaching 38.0 km/h.
What is the warmest month in Dergaon?
The warmest month in Dergaon is August (28.6 °C on average); the coldest is January (16.9 °C).
How much does it rain in Dergaon?
Dergaon receives on average 2,823 mm of precipitation per year, spread over about 188 rainy days.
Is it sunny in Dergaon?
Dergaon gets on average 9.5 hours of sunshine per day, roughly 3,468 hours per year over 1940-2025.
Are there tropical nights in Dergaon?
Yes: Dergaon has on average 204 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Dergaon?
In Dergaon, between 1940 and 2025, the highest apparent temperature reached 49.4 °C on 23 September 2024, and the lowest was 3.1 °C on 28 December 1961.
Compare Dergaon with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Dergaon