Rosetta weather in September
In September, Rosetta sees average daytime highs of 28°C and overnight lows near 24°C, with 1 mm of rain across 0.1 wet days and about 12.2 hours of daylight. It is the 3rd-warmest and 9th-wettest month of the year here.
Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 96% of the time in September, and the air most often feels muggy.
Daylight stretches from about 12 h 42 min at the start of September to 11 h 42 min by month's end. Set against the rest of the year, September is Rosetta's 4th-clearest and 11th-windiest month. For the whole year in context, see Rosetta's year-round climate.
- Daytime high
- 28°
- 3rd warmest
- Overnight low
- 24°
- 10th coldest
- Rainfall
- 1 mm
- 0.1 wet days
- Daylight
- 12 h 12 min
- 5:47 AM – 5:58 PM
- Cloud cover
- 10%
- 4th clearest
- Wind
- 15 km/h
- 11th windiest
- Solar energy
- 5.99 kWh/m²
- Travel score
- 8.7
- out of 10
Rosetta is city in Egypt.
- Founded
- ~850 CE
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in September
Day-to-day highs hold fairly steady near 28°C through the month.
A typical September day in Rosetta reaches about 28°C in the afternoon and slips back to 24°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 29°C. Set against its neighbours, September runs about 1°C cooler than August and about 2°C warmer than October.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 |
| Avg low (°C) | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 23 | 23 | 23 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 28 | 25 |
| 2 | 28 | 25 |
| 3 | 28 | 25 |
| 4 | 28 | 25 |
| 5 | 28 | 25 |
| 6 | 28 | 25 |
| 7 | 28 | 25 |
| 8 | 28 | 25 |
| 9 | 28 | 25 |
| 10 | 28 | 25 |
| 11 | 28 | 25 |
| 12 | 28 | 24 |
| 13 | 28 | 24 |
| 14 | 28 | 24 |
| 15 | 28 | 24 |
| 16 | 28 | 24 |
| 17 | 28 | 24 |
| 18 | 28 | 24 |
| 19 | 28 | 24 |
| 20 | 28 | 24 |
| 21 | 28 | 24 |
| 22 | 28 | 24 |
| 23 | 27 | 24 |
| 24 | 27 | 24 |
| 25 | 27 | 24 |
| 26 | 27 | 24 |
| 27 | 27 | 24 |
| 28 | 27 | 23 |
| 29 | 27 | 23 |
| 30 | 27 | 23 |
Rosetta weather by month
How September compares with the rest of the year at a glance. September is the 3rd-warmest and 9th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 17° / 13° | 44 | 7.5 | 10.2 | 6.1 |
| Feb | 17° / 13° | 27 | 5.1 | 10.9 | 6.5 |
| Mar | 19° / 14° | 15 | 2.6 | 11.8 | 7.6 |
| Apr | 21° / 16° | 4 | 1.1 | 12.7 | 8.4 |
| May | 23° / 19° | 1 | 0.2 | 13.6 | 9.3 |
| Jun | 26° / 22° | 0 | 0 | 14 | 9.3 |
| Jul | 28° / 25° | 0 | 0 | 13.8 | 8.7 |
| Aug | 29° / 25° | 0 | 0 | 13.1 | 8.0 |
| Sep | 28° / 24° | 1 | 0.1 | 12.2 | 8.7 |
| Oct | 26° / 22° | 7 | 1.4 | 11.2 | 8.8 |
| Nov | 22° / 19° | 24 | 3.7 | 10.4 | 8.1 |
| Dec | 19° / 15° | 36 | 6.4 | 10 | 6.9 |
Cloud cover in September
The sky is clear or mostly clear about 96% of the time in September.
Beyond those clear spells, partly cloudy skies cover about 3% of September, with mostly cloudy or overcast conditions the remaining 1%.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 99 | 99 | 99 | 99 | 98 | 98 | 97 | 97 | 97 | 96 | 96 | 96 | 95 |
| Cloudier (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 2 | 2 | 3 | 3 | 3 | 4 | 4 | 4 | 5 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 100 | 0 |
| 2 | 100 | 0 |
| 3 | 100 | 0 |
| 4 | 100 | 0 |
| 5 | 100 | 0 |
| 6 | 100 | 0 |
| 7 | 100 | 0 |
| 8 | 100 | 0 |
| 9 | 100 | 0 |
| 10 | 100 | 0 |
| 11 | 100 | 0 |
| 12 | 100 | 0 |
| 13 | 100 | 0 |
| 14 | 100 | 0 |
| 15 | 100 | 0 |
| 16 | 100 | 0 |
| 17 | 100 | 0 |
| 18 | 99 | 1 |
| 19 | 99 | 1 |
| 20 | 99 | 1 |
| 21 | 99 | 1 |
| 22 | 98 | 2 |
| 23 | 98 | 2 |
| 24 | 97 | 3 |
| 25 | 97 | 3 |
| 26 | 97 | 3 |
| 27 | 96 | 4 |
| 28 | 96 | 4 |
| 29 | 96 | 4 |
| 30 | 95 | 5 |
Chance of precipitation in September
Rosetta gets around 1 mm of rain over 0.1 wet days in September. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 0% and peaks near 1% on the wettest days.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Rain chance (%) | |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 0 |
| 8 | 0 |
| 9 | 0 |
| 10 | 0 |
| 11 | 0 |
| 12 | 0 |
| 13 | 0 |
| 14 | 0 |
| 15 | 0 |
| 16 | 0 |
| 17 | 0 |
| 18 | 0 |
| 19 | 0 |
| 20 | 0 |
| 21 | 1 |
| 22 | 1 |
| 23 | 1 |
| 24 | 1 |
| 25 | 1 |
| 26 | 1 |
| 27 | 1 |
| 28 | 1 |
| 29 | 1 |
| 30 | 1 |
Humidity in September
Most of September feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, September lands in the muggy band about 47% of days. Sticky, muggy-or-worse air turns up on roughly 85% of them.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Comfortable (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 3 | 3 | 4 | 4 | 4 | 5 |
| Humid (%) | 4 | 4 | 5 | 6 | 6 | 7 | 7 | 8 | 8 | 9 | 9 | 10 | 10 | 11 | 12 | 13 | 14 | 14 | 15 | 16 | 17 | 18 | 19 | 19 | 20 | 22 | 23 | 24 | 25 | 26 |
| Muggy (%) | 31 | 33 | 35 | 37 | 39 | 41 | 43 | 45 | 46 | 48 | 49 | 50 | 52 | 53 | 52 | 51 | 51 | 52 | 53 | 53 | 52 | 51 | 51 | 52 | 52 | 51 | 50 | 51 | 51 | 50 |
| Oppressive (%) | 60 | 58 | 55 | 53 | 51 | 48 | 46 | 44 | 42 | 40 | 39 | 38 | 36 | 35 | 35 | 34 | 33 | 32 | 31 | 30 | 30 | 29 | 28 | 27 | 25 | 24 | 23 | 21 | 20 | 19 |
| Miserable (%) | 5 | 5 | 5 | 4 | 4 | 4 | 3 | 3 | 3 | 3 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|---|---|
| 1 | 0 | 4 | 31 | 60 | 5 |
| 2 | 0 | 4 | 33 | 58 | 5 |
| 3 | 0 | 5 | 35 | 55 | 5 |
| 4 | 0 | 6 | 37 | 53 | 4 |
| 5 | 0 | 6 | 39 | 51 | 4 |
| 6 | 0 | 7 | 41 | 48 | 4 |
| 7 | 0 | 7 | 43 | 46 | 3 |
| 8 | 0 | 8 | 45 | 44 | 3 |
| 9 | 0 | 8 | 46 | 42 | 3 |
| 10 | 0 | 9 | 48 | 40 | 3 |
| 11 | 0 | 9 | 49 | 39 | 2 |
| 12 | 0 | 10 | 50 | 38 | 2 |
| 13 | 0 | 10 | 52 | 36 | 2 |
| 14 | 0 | 11 | 53 | 35 | 1 |
| 15 | 0 | 12 | 52 | 35 | 1 |
| 16 | 1 | 13 | 51 | 34 | 1 |
| 17 | 1 | 14 | 51 | 33 | 1 |
| 18 | 1 | 14 | 52 | 32 | 1 |
| 19 | 1 | 15 | 53 | 31 | 0 |
| 20 | 1 | 16 | 53 | 30 | 0 |
| 21 | 1 | 17 | 52 | 30 | 0 |
| 22 | 2 | 18 | 51 | 29 | 0 |
| 23 | 2 | 19 | 51 | 28 | 0 |
| 24 | 2 | 19 | 52 | 27 | 0 |
| 25 | 3 | 20 | 52 | 25 | 0 |
| 26 | 3 | 22 | 51 | 24 | 0 |
| 27 | 4 | 23 | 50 | 23 | 0 |
| 28 | 4 | 24 | 51 | 21 | 0 |
| 29 | 4 | 25 | 51 | 20 | 0 |
| 30 | 5 | 26 | 50 | 19 | 0 |
Wind in September
Winds average 15 km/h in September.
Across September, daily wind ranges from about 15 km/h on the calmest days to 15 km/h at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 |
| Feels | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 15 | light breeze |
| 2 | 15 | light breeze |
| 3 | 15 | light breeze |
| 4 | 15 | light breeze |
| 5 | 15 | light breeze |
| 6 | 15 | light breeze |
| 7 | 15 | light breeze |
| 8 | 15 | light breeze |
| 9 | 15 | light breeze |
| 10 | 15 | light breeze |
| 11 | 15 | light breeze |
| 12 | 15 | light breeze |
| 13 | 15 | light breeze |
| 14 | 15 | light breeze |
| 15 | 15 | light breeze |
| 16 | 15 | light breeze |
| 17 | 15 | light breeze |
| 18 | 15 | light breeze |
| 19 | 15 | light breeze |
| 20 | 15 | light breeze |
| 21 | 15 | light breeze |
| 22 | 15 | light breeze |
| 23 | 15 | light breeze |
| 24 | 15 | light breeze |
| 25 | 15 | light breeze |
| 26 | 15 | light breeze |
| 27 | 15 | light breeze |
| 28 | 15 | light breeze |
| 29 | 15 | light breeze |
| 30 | 15 | light breeze |
Sunrise & sunset in September
Daylight runs from about 12 h 42 min at the start of September to 11 h 42 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 60 minutes over September. Sunrise moves from 5:38 AM to 5:56 AM, and sunset from 6:18 PM to 5:40 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 12.7 | 12.6 | 12.6 | 12.6 | 12.5 | 12.5 | 12.5 | 12.4 | 12.4 | 12.4 | 12.4 | 12.3 | 12.3 | 12.3 | 12.2 | 12.2 | 12.2 | 12.1 | 12.1 | 12.1 | 12.0 | 12.0 | 12.0 | 11.9 | 11.9 | 11.9 | 11.8 | 11.8 | 11.8 | 11.7 |
| Sunrise (AM) | 5:38 | 5:38 | 5:39 | 5:40 | 5:40 | 5:41 | 5:42 | 5:42 | 5:43 | 5:43 | 5:44 | 5:45 | 5:45 | 5:46 | 5:46 | 5:47 | 5:48 | 5:48 | 5:49 | 5:49 | 5:50 | 5:51 | 5:51 | 5:52 | 5:53 | 5:53 | 5:54 | 5:54 | 5:55 | 5:56 |
| Sunset (PM) | 6:18 | 6:17 | 6:16 | 6:14 | 6:13 | 6:12 | 6:10 | 6:09 | 6:08 | 6:06 | 6:05 | 6:04 | 6:02 | 6:01 | 6:00 | 5:58 | 5:57 | 5:56 | 5:54 | 5:53 | 5:52 | 5:50 | 5:49 | 5:47 | 5:46 | 5:45 | 5:43 | 5:42 | 5:41 | 5:40 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 12.7 | 5:38 | 6:18 |
| 2 | 12.6 | 5:38 | 6:17 |
| 3 | 12.6 | 5:39 | 6:16 |
| 4 | 12.6 | 5:40 | 6:14 |
| 5 | 12.5 | 5:40 | 6:13 |
| 6 | 12.5 | 5:41 | 6:12 |
| 7 | 12.5 | 5:42 | 6:10 |
| 8 | 12.4 | 5:42 | 6:09 |
| 9 | 12.4 | 5:43 | 6:08 |
| 10 | 12.4 | 5:43 | 6:06 |
| 11 | 12.4 | 5:44 | 6:05 |
| 12 | 12.3 | 5:45 | 6:04 |
| 13 | 12.3 | 5:45 | 6:02 |
| 14 | 12.3 | 5:46 | 6:01 |
| 15 | 12.2 | 5:46 | 6:00 |
| 16 | 12.2 | 5:47 | 5:58 |
| 17 | 12.2 | 5:48 | 5:57 |
| 18 | 12.1 | 5:48 | 5:56 |
| 19 | 12.1 | 5:49 | 5:54 |
| 20 | 12.1 | 5:49 | 5:53 |
| 21 | 12.0 | 5:50 | 5:52 |
| 22 | 12.0 | 5:51 | 5:50 |
| 23 | 12.0 | 5:51 | 5:49 |
| 24 | 11.9 | 5:52 | 5:47 |
| 25 | 11.9 | 5:53 | 5:46 |
| 26 | 11.9 | 5:53 | 5:45 |
| 27 | 11.8 | 5:54 | 5:43 |
| 28 | 11.8 | 5:54 | 5:42 |
| 29 | 11.8 | 5:55 | 5:41 |
| 30 | 11.7 | 5:56 | 5:40 |
Solar energy in September
Average shortwave solar energy reaching the ground each day in September, about 5.99 kWh/m².
For context, solar energy here swings from a low near 2.85 kWh/m² to a high of 7.85 kWh/m² in June across the year — September's 5.99 kWh/m² falls in the middle.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 6.5 | 6.5 | 6.5 | 6.4 | 6.4 | 6.4 | 6.3 | 6.3 | 6.3 | 6.2 | 6.2 | 6.1 | 6.1 | 6.0 | 6.0 | 6.0 | 5.9 | 5.9 | 5.8 | 5.8 | 5.8 | 5.7 | 5.7 | 5.6 | 5.6 | 5.5 | 5.5 | 5.5 | 5.4 | 5.4 |
| Level | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 6.5 | Intense |
| 2 | 6.5 | Intense |
| 3 | 6.5 | Intense |
| 4 | 6.4 | Intense |
| 5 | 6.4 | Intense |
| 6 | 6.4 | Intense |
| 7 | 6.3 | Intense |
| 8 | 6.3 | Intense |
| 9 | 6.3 | Intense |
| 10 | 6.2 | Intense |
| 11 | 6.2 | Intense |
| 12 | 6.1 | Intense |
| 13 | 6.1 | Intense |
| 14 | 6.0 | Intense |
| 15 | 6.0 | Intense |
| 16 | 6.0 | Bright |
| 17 | 5.9 | Bright |
| 18 | 5.9 | Bright |
| 19 | 5.8 | Bright |
| 20 | 5.8 | Bright |
| 21 | 5.8 | Bright |
| 22 | 5.7 | Bright |
| 23 | 5.7 | Bright |
| 24 | 5.6 | Bright |
| 25 | 5.6 | Bright |
| 26 | 5.5 | Bright |
| 27 | 5.5 | Bright |
| 28 | 5.5 | Bright |
| 29 | 5.4 | Bright |
| 30 | 5.4 | Bright |
Hazard calendar for Rosetta
None of Rosetta's seasonal hazards are active in September. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.
Rosetta sees seasonal dust haze (May), heaviest in May.
Is September a good time to visit Rosetta?
Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
September is one of the better times to visit Rosetta for general sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Rosetta in September
From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In September, Rosetta sees daytime highs around 28°C and nights near 24°C. Pack light clothes. Worth having: sun protection.
Sea temperature near Rosetta in September
The nearest coast averages about 27°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea offshore is warmest in August at about 28°C and coldest in February near 17°C.
It's comfortable for a long swim from Apr 30 to Dec 18 — about 7.7 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 18 | 17 | 17 | 19 | 21 | 24 | 27 | 28 | 27 | 26 | 23 | 20 |
| Comfort | Cool | Cool | Cool | Cool | Refreshing | Warm | Warm | Warm | Warm | Warm | Refreshing | Refreshing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 18 | Cool |
| Feb | 17 | Cool |
| Mar | 17 | Cool |
| Apr | 19 | Cool |
| May | 21 | Refreshing |
| Jun | 24 | Warm |
| Jul | 27 | Warm |
| Aug | 28 | Warm |
| Sep | 27 | Warm |
| Oct | 26 | Warm |
| Nov | 23 | Refreshing |
| Dec | 20 | Refreshing |
UV index in Rosetta in September
Clear-sky midday UV in September peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Rosetta peaks around June 20 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 11 at about 3 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 3 | 4 | 6 | 8 | 9 | 10 | 10 | 10 | 9 | 6 | 5 | 3 |
| Level | Moderate | Moderate | High | Very high | Very high | Extreme | Extreme | Very high | Very high | High | Moderate | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 3 | Moderate |
| Feb | 4 | Moderate |
| Mar | 6 | High |
| Apr | 8 | Very high |
| May | 9 | Very high |
| Jun | 10 | Extreme |
| Jul | 10 | Extreme |
| Aug | 10 | Very high |
| Sep | 9 | Very high |
| Oct | 6 | High |
| Nov | 5 | Moderate |
| Dec | 3 | Moderate |
Air quality in Rosetta in September
Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.
Air quality in Rosetta is worst in January — around 52 µg/m³ PM2.5 (poor), about 2.6× the cleanest month (July, 20 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 52 | 47 | 39 | 33 | 29 | 23 | 20 | 21 | 22 | 29 | 44 | 47 |
| Level | Poor | Poor | Poor | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Poor | Poor |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 52 | Poor |
| Feb | 47 | Poor |
| Mar | 39 | Poor |
| Apr | 33 | Moderate |
| May | 29 | Moderate |
| Jun | 23 | Moderate |
| Jul | 20 | Moderate |
| Aug | 21 | Moderate |
| Sep | 22 | Moderate |
| Oct | 29 | Moderate |
| Nov | 44 | Poor |
| Dec | 47 | Poor |
Where is Rosetta?
Rosetta sits at 31.4°N, 30.4°E, 15 m above sea level, in Egypt. The nearest listed city is Idkū, 15 km away.
Topography around Rosetta
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Rosetta.
Within 3 km, the terrain around Rosetta has only modest variations in elevation — a maximum elevation change of 21 m around an average of 3 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 30 m; within 80 km, only modest variations in elevation — a maximum elevation change of 54 m.
The land around Rosetta is covered by trees (34%), cropland (26%) and artificial surfaces (21%) within 3 km, water (42%) and cropland (21%) within 16 km, and cropland (45%) and water (41%) within 80 km.
Egypt travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type C / F
- 220 V · 50 Hz
- Prices
- ≈ 15% of US
- price level, 2025
- GDP per capita
- $3,086
- 2025
- Happiness
- 3.9 / 10
- World Happiness, 2025
- Safe drinking water
- 79%
- of population, 2024
- Homicide rate
- 1.3
- per 100k, 2017
- Road deaths
- 10.1
- per 100k/yr, 2019
- Income group
- Lower middle
- World Bank
- English
- Low
- EF EPI 459
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Rosetta (31.3995°, 30.4172°, elevation 15 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).