Rosetta climate by month
What the weather is like
Rosetta has a hot desert climate (Köppen BWh): very little rain and intense sun.
The warmest month is August, when afternoons average 31° and nights 24°. January is the coolest month, with highs of 18° and lows of 10°. The difference between the warmest and the coolest month is about 14°.
About 173 mm of precipitation falls in an average year. January is the wettest month (48 mm, 9 wet days) and July the driest (0 mm, 0 wet days). Cloud cover ranges from 3% in June to 26% in January.
The sea reaches about 28° in August. Sea temperatures lag the air by a month or two, so late summer is usually warmer for swimming than early summer.
Compared with Cairo, the capital, Rosetta is 4.4° cooler on a August afternoon and receives more precipitation over the year.
Year in figures
- Hottest afternoons
- 31° · August
- Coldest nights
- 10° · January
- Wettest month
- January
- Driest month
- July
- Clearest skies
- June · 3% cloud
- Warmest sea
- 28° · August
- Longest day
- 14 h 11 min
- Shortest day
- 10 h 07 min
Twelve months at a glance
Temperature and precipitation
Daily high/low range bars, monthly precipitation columns, sea temperature lineTemperature curve
Average high, low and seaDaylight
Hours between sunrise and sunset on the 15th of each monthClimate normals month by month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average high | 18° | 19° | 21° | 24° | 27° | 29° | 31° | 31° | 30° | 28° | 24° | 20° |
| Average low | 10° | 10° | 12° | 14° | 18° | 21° | 24° | 24° | 22° | 19° | 15° | 11° |
| Precipitation | 48 mm | 36 mm | 13 mm | 4 mm | 1 mm | 0 mm | 0 mm | 0 mm | 1 mm | 6 mm | 25 mm | 39 mm |
| Wet days (≥1 mm) | 8.5 | 6.5 | 6.3 | 1.7 | 0.3 | 0.3 | 0 | 0 | 0.3 | 0.8 | 4.7 | 6 |
| Cloud cover | 26% | 22% | 20% | 16% | 12% | 3% | 3% | 5% | 5% | 12% | 21% | 25% |
| Sea temperature | 18° | 17° | 17° | 19° | 21° | 24° | 27° | 28° | 27° | 26° | 23° | 20° |
| Daylight | 10h 19 | 11h 05 | 11h 57 | 12h 56 | 13h 44 | 14h 11 | 14h 00 | 13h 19 | 12h 23 | 11h 26 | 10h 35 | 10h 07 |
| Month score | 80 | 85 | 85 | 96 | 90 | 81 | 76 | 74 | 77 | 86 | 89 | 86 |