Derna monthly weather averages
Average daytime temperature
The bar chart below shows the average monthly peak daytime temperatures at Derna
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| °C | 0.2 | 3.7 | 9.7 | 16.1 | 21.1 | 24.2 | 26 | 25.6 | 22 | 16.2 | 9.1 | 2.6 |
| °F | 32.4 | 38.7 | 49.5 | 61 | 70 | 75.5 | 78.7 | 78.1 | 71.5 | 61.1 | 48.4 | 36.7 |
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 | 40 | 37 | 34 | 46 | 66 | 87 | 62 | 60 | 41 | 36 | 49 | 54 |
| inches | 1.6 | 1.5 | 1.3 | 1.8 | 2.6 | 3.4 | 2.5 | 2.3 | 1.6 | 1.4 | 1.9 | 2.1 |
| Rainy days | 12 | 11 | 11 | 11 | 13 | 13 | 11 | 9 | 8 | 8 | 12 | 14 |
Average annual rainfall in Derna: 680.2mm (267.8 inches)
Average daily sunshine
The bar chart below shows the average daily sunshine hours in Derna
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hrs sunshine | 2.3 | 3.5 | 5.2 | 6.7 | 8.4 | 9.1 | 9.9 | 9.3 | 7.4 | 5.9 | 2.8 | 1.9 |
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 | -6.2 | -3.5 | 0 | 5.2 | 9.6 | 13 | 14.2 | 13.5 | 10.2 | 5.2 | 1.9 | -3 |
| Max °C | 0.4 | 3.9 | 10 | 16.4 | 21.4 | 24.5 | 26.3 | 25.9 | 22.3 | 16.5 | 9.3 | 2.8 |
| Min °F | 20.8 | 25.7 | 32.1 | 41.4 | 49.3 | 55.3 | 57.5 | 56.3 | 50.3 | 41.3 | 35.4 | 26.7 |
| Max °F | 26.8 | 32.4 | 41 | 51.4 | 59.9 | 65.7 | 68.4 | 67.5 | 61.2 | 51.4 | 42.1 | 31.8 |
Sea temperature
The graph below shows the average sea temperature.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| °C | 8.6 | 7.7 | 7.9 | 9.8 | 13.9 | 18.7 | 22 | 23 | 20.5 | 16.8 | 13.3 | 10.4 |
| °F | 47.5 | 45.9 | 46.3 | 49.6 | 57.1 | 65.7 | 71.6 | 73.4 | 68.9 | 62.3 | 55.9 | 50.8 |
Wind speed
The graph below shows the average wind speed.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| km/h | 9 | 10 | 11 | 11 | 10 | 9 | 8 | 8 | 8 | 8 | 9 | 9 |
| mph | 5 | 6 | 7 | 7 | 6 | 5 | 5 | 5 | 5 | 5 | 6 | 5 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 87% | 83% | 76% | 71% | 71% | 72% | 70% | 73% | 75% | 78% | 85% | 88% |
Other monthly averages
Derna weather stats
| Hottest month: | July | 26°C 78.8°F |
|---|---|---|
| Driest month: | March | 34mm 1.3ins |
| Sunniest month: | August | 9.3hrs |
| Coldest month: | January | 0.2°C 32.4°F |
| Wettest month: | June | 87mm 3.4ins |
| Warmest sea: | August | 23°C 73.4°F |
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