Hyesan-si monthly weather averages
Average daytime temperature
The bar chart below shows the average monthly peak daytime temperatures at Hyesan-si
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| °C | -12.4 | -8.2 | -0 | 10.6 | 17.9 | 21.1 | 24 | 23.5 | 17.6 | 10.9 | 0.2 | -9.5 |
| °F | 9.6 | 17.2 | 32 | 51.1 | 64.3 | 70 | 75.2 | 74.2 | 63.7 | 51.6 | 32.3 | 14.9 |
Please note: these are the average peak daytime temperatures (usually around mid-afternoon) so do not show daytime / night highs and lows. To see the daily range of temperatures have a look at the temperature max / min chart below.
Average rainfall & rainy days
The graph below shows the average rainfall and number of rainy days per month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| mm | 7 | 8 | 18 | 36 | 60 | 105 | 145 | 148 | 67 | 26 | 19 | 11 |
| inches | 0.3 | 0.3 | 0.7 | 1.4 | 2.3 | 4.1 | 5.7 | 5.8 | 2.6 | 1 | 0.7 | 0.4 |
| Rainy days | 9 | 8 | 9 | 10 | 13 | 16 | 19 | 17 | 12 | 9 | 9 | 9 |
Average annual rainfall in Hyesan-si: 819.067mm (322.5 inches)
Average daily sunshine
The bar chart below shows the average daily sunshine hours in Hyesan-si
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hrs sunshine | 6.3 | 7.1 | 7.9 | 8.1 | 8.5 | 7.6 | 6.2 | 6.3 | 7.2 | 7.1 | 6.1 | 5.7 |
Day / night temperatures
The graph below shows the daily range of temperatures for each month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Min °C | -23.9 | -20.3 | -11.3 | -2.1 | 4.4 | 9.8 | 14.8 | 14.1 | 6.1 | -2 | -10.7 | -20.4 |
| Max °C | -12.2 | -8 | 0.3 | 10.9 | 18.3 | 21.4 | 24.3 | 23.7 | 17.9 | 11.2 | 0.5 | -9.3 |
| Min °F | -10.9 | -4.5 | 11.8 | 28.2 | 39.8 | 49.6 | 58.6 | 57.4 | 43 | 28.4 | 12.8 | -4.6 |
| Max °F | -0.4 | 6.6 | 22.1 | 39.9 | 52.3 | 60.1 | 67.1 | 66 | 53.6 | 40.3 | 22.8 | 5.4 |
Sea temperature
The graph below shows the average sea temperature.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| °C | 4.7 | 3.5 | 4.1 | 6.7 | 10.8 | 15.9 | 20.4 | 22.7 | 20.6 | 16.7 | 12.1 | 7.6 |
| °F | 40.4 | 38.4 | 39.3 | 44 | 51.4 | 60.7 | 68.6 | 72.9 | 69 | 62.1 | 53.8 | 45.7 |
Wind speed
The graph below shows the average wind speed.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| km/h | 14 | 14 | 15 | 17 | 15 | 12 | 12 | 10 | 10 | 12 | 14 | 14 |
| mph | 9 | 9 | 9 | 10 | 9 | 7 | 7 | 6 | 6 | 7 | 9 | 9 |
A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.
Relative humidity
The graph below shows the average relative humidity.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 61% | 60% | 58% | 56% | 60% | 73% | 81% | 81% | 72% | 65% | 62% | 61% |
Other monthly averages
Hyesan-si weather stats
| Hottest month: | July | 24°C 75.2°F |
|---|---|---|
| Driest month: | January | 7mm 0.3ins |
| Sunniest month: | March | 7.9hrs |
| Coldest month: | January | -12.4°C 9.7°F |
| Wettest month: | August | 148mm 5.8ins |
| Warmest sea: | August | 22.7°C 72.9°F |
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