Mt Hagen climate — normals and trends
Mt Hagen (Papua New Guinea) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 16.8 °C and it receives 3,870 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 March (17.1 °C on average) and the coldest is July (16.5 °C). Rainfall peaks in March.
Mt Hagen averages 0 frost days, 0 hot days (≥ 30 °C) and 308 rainy days per year.
Mt Hagen has warmed by +1.8 °C between 1940 and 2025, or +0.21 °C per decade. This trend is statistically significant.
The hottest day of the period reached 27.8 °C (on 13 March 1997) and the coldest 6.2 °C (on 6 July 1940).
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
Mt HagenWestern Highlands Province
- coords
- -5.86°, 144.23°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
16.8°C
Average daily high
21.5°C
Average daily low
13.3°C
Annual rainfall
3,870mm
Sunshine / day
8.1h
Mean relative humidity
88%
Average peak wind
7.9km/h
Seasonal range
0.6°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
308 d/yr
Annual snowfall
0.0 cm
Average feels-like high
23.7 °C
Average feels-like low
13.4 °C
Average peak gust
27.8 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
16.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.8 °C
since 1940
+0.2 °C per decade · r² = 0.78 · 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
27.8 °C
13 March 1997
Coldest day
6.2 °C
6 July 1940
Wettest day
143 mm
25 February 1959
Windiest day
17.3 km/h
12 August 1996
Strongest gust
57.2 km/h
10 November 1951
Hottest feels-like
31.3 °C
21 December 2016
Coldest feels-like
3.7 °C
6 July 1940
Sunniest day
12.3 h
31 December 1999
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 | 23.5 °C | +1.9 °C | 170 mm | -298 mm |
| Feb | 22.7 °C | +1.2 °C | 353 mm | -136 mm |
| Mar | 22.9 °C | +1.4 °C | 389 mm | -119 mm |
| Apr | 22.4 °C | +0.9 °C | 325 mm | -51 mm |
| May | 22.6 °C | +1.0 °C | 207 mm | -26 mm |
| Jun | 22.3 °C | +1.1 °C | 119 mm | -54 mm |
| Jul | 21.7 °C | +0.7 °C | 177 mm | -6 mm |
| Aug | 22.1 °C | +0.9 °C | 189 mm | -6 mm |
| Sep | 22.3 °C | +0.9 °C | 239 mm | +24 mm |
| Oct | 22.8 °C | +1.2 °C | 245 mm | -30 mm |
| Nov | 22.5 °C | +0.7 °C | 463 mm | +139 mm |
| Dec | 23.2 °C | +1.5 °C | 440 mm | +9 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 Mt Hagen?
Mt Hagen has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 16.8 °C and it receives 3,870 mm of precipitation per year.
What is the hottest day ever recorded in Mt Hagen?
The hottest day measured in Mt Hagen between 1940 and 2025 was 13 March 1997, reaching 27.8 °C.
What is the coldest day in Mt Hagen?
The coldest day measured in Mt Hagen between 1940 and 2025 was 6 July 1940, at 6.2 °C.
Does it snow in Mt Hagen?
Almost never: Mt Hagen sees virtually no snow, with about 0 frost days per year.
Has the climate of Mt Hagen warmed?
Yes: Mt Hagen warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Mt Hagen?
The wettest day measured in Mt Hagen between 1940 and 2025 was 25 February 1959, with 143 mm of rain in 24 hours.
What was the windiest day in Mt Hagen?
The windiest day measured in Mt Hagen between 1940 and 2025 was 12 August 1996, with winds reaching 17.3 km/h.
What is the warmest month in Mt Hagen?
The warmest month in Mt Hagen is March (17.1 °C on average); the coldest is July (16.5 °C).
How much does it rain in Mt Hagen?
Mt Hagen receives on average 3,870 mm of precipitation per year, spread over about 308 rainy days.
Is it sunny in Mt Hagen?
Mt Hagen gets on average 8.1 hours of sunshine per day, roughly 2,957 hours per year over 1940-2025.
Are there tropical nights in Mt Hagen?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Mt Hagen.
What was the most extreme apparent temperature in Mt Hagen?
In Mt Hagen, between 1940 and 2025, the highest apparent temperature reached 31.3 °C on 21 December 2016, and the lowest was 3.7 °C on 6 July 1940.
Compare Mt Hagen with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Mt Hagen