Haeju climate
Haeju (North Korea) has a monsoon-influenced hot-summer humid continental climate (Köppen Dwa). The average temperature over the year is 11 °C52 °F, and about 1,027 mm40 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Haeju climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin | Frost days |
|---|---|---|---|---|---|
| Jan | 032 | −719 | −326 | 120.5 | 30 |
| Feb | 337 | −522 | −130 | 210.8 | 26 |
| Mar | 846 | −129 | 338 | 241.0 | 20 |
| Apr | 1559 | 439 | 949 | 572.2 | 3 |
| May | 2170 | 1051 | 1660 | 853.3 | 0 |
| Jun | 2578 | 1661 | 2170 | 963.8 | 0 |
| Jul | 2781 | 2069 | 2475 | 28711 | 0 |
| Aug | 2882 | 2170 | 2576 | 2389.4 | 0 |
| Sep | 2475 | 1661 | 2068 | 1024.0 | 0 |
| Oct | 1864 | 948 | 1456 | 421.7 | 0 |
| Nov | 1050 | 236 | 643 | 451.8 | 10 |
| Dec | 236 | −424 | −130 | 180.7 | 27 |
| Year | 2882 | −719 | 1152 | 1,02740 | 116 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total. Frost days are for the whole grid cell.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 77% | 58% | 2.3 | 9:48 |
| Feb | 74% | 52% | 3.1 | 10:44 |
| Mar | 73% | 46% | 4.4 | 11:51 |
| Apr | 72% | 51% | 5.1 | 13:08 |
| May | 73% | 54% | 5.6 | 14:13 |
| Jun | 75% | 63% | 5.2 | 14:47 |
| Jul | 85% | 74% | 4.2 | 14:33 |
| Aug | 84% | 66% | 4.4 | 13:37 |
| Sep | 80% | 58% | 4.3 | 12:22 |
| Oct | 76% | 48% | 3.5 | 11:08 |
| Nov | 76% | 55% | 2.4 | 10:03 |
| Dec | 77% | 58% | 2.0 | 9:32 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Haeju is like
The warmest month is August, with an average high of 28 °C82 °F and a low of 21 °C70 °F. The coldest is January, when highs average 0 °C32 °F and lows −7 °C19 °F. Seasons are strongly marked: the warmest month is on average 28 °C50.4 °F warmer than the coldest.
It is wet, with about 1,027 mm40 in of precipitation per year. The wettest three-month stretch is July–September, which brings 61% of the annual total. Months with less than 20 mm0.8 in on average: December and January. The wettest month is July (287 mm11 in), the driest is January (12 mm0.5 in).
Relative humidity ranges from 72% in April to 85% in July. The clearest skies (lowest average cloud amount, 46%) are typical of March. Average wind speed near the ground ranges from 9 km/h (5 mph) in June to 13 km/h (8 mph) in December. Daylight lasts from about 9.5 hours in December to 14.8 hours in June.
A lasting snow cover is typical in January and February, when the average snow depth in the reanalysis exceeds 10 cm (deepest in January, about 15 cm).
Best time to visit Haeju
Based on these averages, the most comfortable months for sightseeing and outdoor activities are May and June and September and October: average highs of 18 °C64 °F to 25 °C78 °F with 42 mm1.7 in to 102 mm4.0 in of precipitation per month.
The most challenging month is January, which is cold, with average highs of 0 °C32 °F.
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Haeju
- Winter (December–February) — highs 032 to 3 °C37 °F, lows −719 to −4 °C24 °F, about 17 mm0.7 in of precipitation a month. Pack a winter coat, hat, gloves and warm, non-slip boots and shoes with good grip, as frost is common.
- Spring (March–May) — highs 846 to 21 °C70 °F, lows −129 to 10 °C51 °F, about 55 mm2.2 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket and an extra layer for the cooler mornings and evenings.
- Summer (June–August) — highs 2578 to 28 °C82 °F, lows 1661 to 21 °C70 °F, about 207 mm8.1 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and a good rain jacket or umbrella and quick-drying shoes.
- Autumn (September–November) — highs 1050 to 24 °C75 °F, lows 236 to 16 °C61 °F, about 63 mm2.5 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket.
How Haeju compares
Compared with Kaesŏng, about 74 km to the east, Haeju has practically the same average temperature and receives 9% less precipitation (1,027 mm40 in vs 1,133 mm45 in). The difference is largest in December (1.2 °C2.2 °F warmer).
Of the 18 places in North Korea covered by World Climates, Haeju is the 4th warmest by annual mean temperature and the 6th wettest by annual precipitation. See all of them on the North Korea climate page.
Places in other countries with the most similar temperature and rainfall pattern: Suwon (South Korea, Dwa), Seoul (South Korea, Dwa) and Paju (South Korea, Dwa).
Nearby places
- Chongdan-up 21 km · 11 °C52 °F · 1,133 mm45 in
- Kangnyŏng 23 km · 11 °C52 °F · 1,027 mm40 in
- Kaesŏng 74 km · 11 °C51 °F · 1,133 mm45 in
- Nampo 82 km · 11 °C52 °F · 962 mm38 in
- Chaeryŏng-ni 88 km · 11 °C52 °F · 931 mm37 in
- Paju 98 km · 11 °C52 °F · 1,217 mm48 in
- Mangyongdae-ri 106 km · 11 °C51 °F · 1,000 mm39 in
- Pyongyang 111 km · 10 °C51 °F · 1,000 mm39 in
Frequently asked questions
What is the warmest month in Haeju?
August is the warmest month in Haeju, with an average high of 28 °C (82 °F) and an average low of 21 °C (70 °F).
What is the coldest month in Haeju?
January is the coldest month, with an average high of 0 °C (32 °F) and an average low of -7 °C (19 °F).
When does it rain the most in Haeju?
July is the wettest month with about 287 mm (11.3 in) of precipitation; January is the driest with about 12 mm (0.5 in).
What is the best time to visit Haeju?
Judging by long-term averages, the most comfortable months are May and June and September and October.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.