Rosetta climate
Rosetta (Egypt) has a hot desert climate (Köppen BWh). The average temperature over the year is 21 °C70 °F, and about 144 mm5.7 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Rosetta climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 1763 | 1355 | 1559 | 361.4 |
| Feb | 1864 | 1254 | 1559 | 240.9 |
| Mar | 2067 | 1356 | 1762 | 110.4 |
| Apr | 2272 | 1560 | 1966 | 110.4 |
| May | 2678 | 1965 | 2272 | 10.0 |
| Jun | 2983 | 2271 | 2577 | 00.0 |
| Jul | 3086 | 2475 | 2781 | 00.0 |
| Aug | 3187 | 2577 | 2882 | 00.0 |
| Sep | 2984 | 2475 | 2680 | 00.0 |
| Oct | 2680 | 2171 | 2475 | 100.4 |
| Nov | 2373 | 1865 | 2169 | 180.7 |
| Dec | 1967 | 1559 | 1763 | 331.3 |
| Year | 3187 | 1254 | 2170 | 1445.7 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 69% | 60% | 3.0 | 10:19 |
| Feb | 69% | 57% | 3.8 | 11:02 |
| Mar | 68% | 48% | 5.2 | 11:54 |
| Apr | 66% | 45% | 6.4 | 12:54 |
| May | 65% | 36% | 7.2 | 13:44 |
| Jun | 66% | 18% | 7.8 | 14:11 |
| Jul | 68% | 15% | 7.7 | 14:00 |
| Aug | 68% | 19% | 7.0 | 13:17 |
| Sep | 66% | 24% | 6.0 | 12:19 |
| Oct | 67% | 39% | 4.6 | 11:21 |
| Nov | 66% | 50% | 3.4 | 10:31 |
| Dec | 68% | 60% | 2.7 | 10:07 |
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 Rosetta is like
The warmest month is August, with an average high of 31 °C87 °F and a low of 25 °C77 °F. The coldest is January, when highs average 17 °C63 °F and lows 13 °C55 °F. There is a clear seasonal cycle, with 12.7 °C22.9 °F between the average temperature of the warmest and the coolest month.
It is very dry, with only 144 mm5.7 in of precipitation in an average year. The wettest three-month stretch is December–February, which brings 64% of the annual total. Months with less than 20 mm0.8 in on average: March–November. The wettest month is January (36 mm1.4 in), the driest is August (0 mm0.0 in).
Relative humidity ranges from 65% in May to 69% in January. The clearest skies (lowest average cloud amount, 15%) are typical of July. Average wind speed near the ground ranges from 14 km/h (8 mph) in October to 16 km/h (10 mph) in January. Daylight lasts from about 10.1 hours in December to 14.2 hours in June.
Best time to visit Rosetta
Based on these averages, the most comfortable months for sightseeing and outdoor activities are March–June and September–December: average highs of 19 °C67 °F to 29 °C84 °F with 0 mm0.0 in to 33 mm1.3 in of precipitation per month.
The most challenging month is August, which is hot, with average highs of 31 °C87 °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 Rosetta
- Winter (December–February) — highs 1763 to 19 °C67 °F, lows 1254 to 15 °C59 °F, about 31 mm1.2 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket.
- Spring (March–May) — highs 2067 to 26 °C78 °F, lows 1356 to 19 °C65 °F, about 8 mm0.3 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket.
- Summer (June–August) — highs 2983 to 31 °C87 °F, lows 2271 to 25 °C77 °F, about 0 mm0.0 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses.
- Autumn (September–November) — highs 2373 to 29 °C84 °F, lows 1865 to 24 °C75 °F, about 9 mm0.4 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses.
How Rosetta compares
Compared with Damanhur, about 41 km to the south, Rosetta is on average 0.5 °C0.9 °F cooler and receives 45% more precipitation (144 mm5.7 in vs 99 mm3.9 in). The difference is largest in June (2.5 °C4.5 °F cooler).
Of the 39 places in Egypt covered by World Climates, Rosetta is the 35th warmest by annual mean temperature and the 4th wettest by annual precipitation. See all of them on the Egypt climate page.
Places in other countries with the most similar temperature and rainfall pattern: Gaza (Palestine, BSh), Ajdabiya (Libya, BWh) and Ashdod (Israel, BSh).
Nearby places
- Idku 15 km · 21 °C70 °F · 167 mm6.6 in
- Kafr ad Dawwar 40 km · 21 °C71 °F · 105 mm4.1 in
- Damanhur 41 km · 22 °C71 °F · 99 mm3.9 in
- Alexandria 52 km · 21 °C70 °F · 105 mm4.1 in
- Kafr ash Shaykh 59 km · 22 °C72 °F · 75 mm3.0 in
- Al Mahallah al Kubra 86 km · 22 °C72 °F · 75 mm3.0 in
- Al Mansurah 100 km · 22 °C72 °F · 75 mm3.0 in
- Munuf 115 km · 22 °C72 °F · 65 mm2.6 in
Frequently asked questions
What is the warmest month in Rosetta?
August is the warmest month in Rosetta, with an average high of 31 °C (87 °F) and an average low of 25 °C (77 °F).
What is the coldest month in Rosetta?
January is the coldest month, with an average high of 17 °C (63 °F) and an average low of 13 °C (55 °F).
When does it rain the most in Rosetta?
January is the wettest month with about 36 mm (1.4 in) of precipitation; August is the driest with about 0 mm (0.0 in).
What is the best time to visit Rosetta?
Judging by long-term averages, the most comfortable months are March–June and September–December.
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.