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Mersa Weather by Month
Average temperatures, rainfall and humidity for Mersa, Ethiopia, month by month, built from OpenWeather’s historical records. Use it to see what a typical Mersa month looks like before you travel — then check the live Mersa forecast for the days ahead.
Warmest month
June
25°C average high
Coolest month
December
7°C average low
Wettest month
August
198 mm of rain
Driest month
November
20 mm of rain
Average temperature and rainfall in Mersa by month
Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.
| Month | Avg high | Avg low | Record low / high | Rainfall | Humidity | Wind |
|---|---|---|---|---|---|---|
| January | 20°C | 7°C | -5°C / 28°C | 35 mm | 62% | 5 km/h |
| February | 21°C | 9°C | -1°C / 28°C | 59 mm | 61% | 5 km/h |
| March | 22°C | 10°C | 2°C / 29°C | 110 mm | 64% | 5 km/h |
| April | 22°C | 11°C | 3°C / 28°C | 90 mm | 62% | 5 km/h |
| May | 23°C | 11°C | 6°C / 30°C | 68 mm | 55% | 6 km/h |
| June | 25°C | 12°C | 6°C / 30°C | 35 mm | 44% | 8 km/h |
| July | 22°C | 13°C | 7°C / 30°C | 171 mm | 65% | 6 km/h |
| August | 21°C | 12°C | 8°C / 28°C | 198 mm | 76% | 5 km/h |
| September | 21°C | 11°C | 5°C / 28°C | 87 mm | 68% | 5 km/h |
| October | 20°C | 8°C | 0°C / 26°C | 35 mm | 65% | 5 km/h |
| November | 19°C | 7°C | -2°C / 25°C | 20 mm | 64% | 5 km/h |
| December | 19°C | 7°C | -4°C / 25°C | 23 mm | 64% | 5 km/h |
Best time to visit Mersa
The most comfortable time to visit Mersa is generally February and May to June, balancing mild daytime temperatures against the driest stretch of the year. Temperatures stay fairly even all year and rain concentrates around August, totalling about 929 mm a year.
Travellers who prefer heat should aim for June, when highs average 25°C. August is the month to avoid if rain would spoil your plans — it averages 198 mm, roughly 10× the rainfall of the driest month (November).
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Mersa forecast for what is happening now.