El Marsa weather in September
In September, El Marsa sees average daytime highs of 25°C and overnight lows near 20°C, with 3 mm of rain across 0.5 wet days and about 12.2 hours of daylight. It is the 1st-warmest and 7th-wettest month of the year here.
Day-to-day highs hold fairly steady near 25°C through the month. The sky is clear or mostly clear about 78% of the time in September, and the air most often feels muggy.
Daylight stretches from about 12 h 36 min at the start of September to 11 h 48 min by month's end. Set against the rest of the year, September is El Marsa's 4th-clearest and 6th-windiest month. For the whole year in context, see El Marsa's year-round climate.
- Daytime high
- 25°
- 1st warmest
- Overnight low
- 20°
- 11th coldest
- Rainfall
- 3 mm
- 0.5 wet days
- Daylight
- 12 h 12 min
- 6:43 AM – 6:53 PM
- Cloud cover
- 25%
- 4th clearest
- Wind
- 23 km/h
- 6th windiest
- Solar energy
- 6.18 kWh/m²
- Travel score
- 9.1
- out of 10
El Marsa is port city in Western Sahara.
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in September
Day-to-day highs hold fairly steady near 25°C through the month.
A typical September day in El Marsa reaches about 25°C in the afternoon and slips back to 20°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 27°C. Set against its neighbours, September runs on par with August and on par with 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) | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
| Avg low (°C) | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 25 | 20 |
| 2 | 25 | 20 |
| 3 | 25 | 20 |
| 4 | 25 | 20 |
| 5 | 25 | 20 |
| 6 | 25 | 20 |
| 7 | 25 | 20 |
| 8 | 25 | 20 |
| 9 | 25 | 20 |
| 10 | 25 | 20 |
| 11 | 25 | 20 |
| 12 | 25 | 20 |
| 13 | 25 | 20 |
| 14 | 25 | 20 |
| 15 | 25 | 20 |
| 16 | 25 | 20 |
| 17 | 25 | 20 |
| 18 | 25 | 20 |
| 19 | 25 | 20 |
| 20 | 25 | 20 |
| 21 | 25 | 20 |
| 22 | 25 | 20 |
| 23 | 25 | 20 |
| 24 | 25 | 20 |
| 25 | 25 | 20 |
| 26 | 25 | 20 |
| 27 | 25 | 20 |
| 28 | 25 | 20 |
| 29 | 25 | 20 |
| 30 | 25 | 20 |
El Marsa weather by month
How September compares with the rest of the year at a glance. September is the 1st-warmest and 7th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 20° / 14° | 7 | 1.4 | 10.5 | 8.1 |
| Feb | 21° / 15° | 7 | 1.4 | 11 | 8.2 |
| Mar | 21° / 16° | 6 | 1 | 11.8 | 8.4 |
| Apr | 21° / 16° | 1 | 0.2 | 12.6 | 8.5 |
| May | 22° / 17° | 0 | 0.1 | 13.3 | 8.7 |
| Jun | 23° / 19° | 0 | 0 | 13.7 | 9.2 |
| Jul | 24° / 20° | 0 | 0 | 13.5 | 9.5 |
| Aug | 25° / 20° | 0 | 0 | 13 | 9.3 |
| Sep | 25° / 20° | 3 | 0.5 | 12.2 | 9.1 |
| Oct | 25° / 19° | 6 | 1 | 11.4 | 8.9 |
| Nov | 23° / 17° | 6 | 1.1 | 10.7 | 8.7 |
| Dec | 21° / 15° | 9 | 1.4 | 10.3 | 8.3 |
Cloud cover in September
The sky is clear or mostly clear about 78% of the time in September.
Beyond those clear spells, partly cloudy skies cover about 8% of September, with mostly cloudy or overcast conditions the remaining 14%. Skies tend to cloud over as the month goes on.
| 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 (%) | 90 | 89 | 89 | 89 | 88 | 88 | 88 | 88 | 88 | 87 | 87 | 87 | 86 | 86 | 86 | 86 | 85 | 85 | 85 | 85 | 85 | 85 | 84 | 84 | 84 | 84 | 84 | 83 | 83 | 84 |
| Cloudier (%) | 10 | 11 | 11 | 11 | 12 | 12 | 12 | 12 | 12 | 13 | 13 | 13 | 14 | 14 | 14 | 14 | 15 | 15 | 15 | 15 | 15 | 15 | 16 | 16 | 16 | 16 | 16 | 17 | 17 | 16 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 90 | 10 |
| 2 | 89 | 11 |
| 3 | 89 | 11 |
| 4 | 89 | 11 |
| 5 | 88 | 12 |
| 6 | 88 | 12 |
| 7 | 88 | 12 |
| 8 | 88 | 12 |
| 9 | 88 | 12 |
| 10 | 87 | 13 |
| 11 | 87 | 13 |
| 12 | 87 | 13 |
| 13 | 86 | 14 |
| 14 | 86 | 14 |
| 15 | 86 | 14 |
| 16 | 86 | 14 |
| 17 | 85 | 15 |
| 18 | 85 | 15 |
| 19 | 85 | 15 |
| 20 | 85 | 15 |
| 21 | 85 | 15 |
| 22 | 85 | 15 |
| 23 | 84 | 16 |
| 24 | 84 | 16 |
| 25 | 84 | 16 |
| 26 | 84 | 16 |
| 27 | 84 | 16 |
| 28 | 83 | 17 |
| 29 | 83 | 17 |
| 30 | 84 | 16 |
Chance of precipitation in September
El Marsa gets around 3 mm of rain over 0.5 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 1% and peaks near 2% 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 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| Rain chance (%) | |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 1 |
| 6 | 1 |
| 7 | 1 |
| 8 | 1 |
| 9 | 1 |
| 10 | 1 |
| 11 | 1 |
| 12 | 1 |
| 13 | 1 |
| 14 | 1 |
| 15 | 1 |
| 16 | 1 |
| 17 | 2 |
| 18 | 2 |
| 19 | 2 |
| 20 | 2 |
| 21 | 2 |
| 22 | 2 |
| 23 | 2 |
| 24 | 2 |
| 25 | 2 |
| 26 | 2 |
| 27 | 2 |
| 28 | 2 |
| 29 | 2 |
| 30 | 2 |
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 53% of days. Sticky, muggy-or-worse air turns up on roughly 54% 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 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 3 | 4 |
| Humid (%) | 34 | 35 | 35 | 36 | 37 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 49 | 50 | 50 | 50 | 51 | 51 | 51 | 51 | 52 | 52 | 53 | 53 |
| Muggy (%) | 65 | 64 | 64 | 63 | 62 | 62 | 61 | 60 | 59 | 58 | 57 | 56 | 54 | 53 | 52 | 51 | 50 | 50 | 49 | 48 | 47 | 47 | 46 | 46 | 45 | 45 | 44 | 44 | 43 | 42 |
| Oppressive (%) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | |
|---|---|---|---|---|
| 1 | 0 | 34 | 65 | 1 |
| 2 | 0 | 35 | 64 | 1 |
| 3 | 0 | 35 | 64 | 1 |
| 4 | 0 | 36 | 63 | 1 |
| 5 | 0 | 37 | 62 | 1 |
| 6 | 0 | 37 | 62 | 1 |
| 7 | 0 | 38 | 61 | 1 |
| 8 | 0 | 39 | 60 | 1 |
| 9 | 0 | 40 | 59 | 1 |
| 10 | 0 | 41 | 58 | 1 |
| 11 | 0 | 42 | 57 | 1 |
| 12 | 0 | 43 | 56 | 1 |
| 13 | 1 | 44 | 54 | 1 |
| 14 | 1 | 45 | 53 | 1 |
| 15 | 1 | 46 | 52 | 1 |
| 16 | 1 | 47 | 51 | 1 |
| 17 | 1 | 48 | 50 | 1 |
| 18 | 1 | 49 | 50 | 1 |
| 19 | 1 | 49 | 49 | 1 |
| 20 | 2 | 50 | 48 | 1 |
| 21 | 2 | 50 | 47 | 1 |
| 22 | 2 | 50 | 47 | 1 |
| 23 | 2 | 51 | 46 | 1 |
| 24 | 2 | 51 | 46 | 1 |
| 25 | 3 | 51 | 45 | 1 |
| 26 | 3 | 51 | 45 | 1 |
| 27 | 3 | 52 | 44 | 1 |
| 28 | 3 | 52 | 44 | 1 |
| 29 | 3 | 53 | 43 | 1 |
| 30 | 4 | 53 | 42 | 1 |
Wind in September
Winds average 23 km/h in September.
Across September, daily wind ranges from about 21 km/h on the calmest days to 26 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) | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 24 | 24 | 24 | 24 | 23 | 23 | 23 | 23 | 23 | 23 | 22 | 22 | 22 | 22 | 22 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 |
| Feels | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 26 | breezy |
| 2 | 26 | breezy |
| 3 | 25 | breezy |
| 4 | 25 | breezy |
| 5 | 25 | breezy |
| 6 | 25 | breezy |
| 7 | 25 | breezy |
| 8 | 24 | breezy |
| 9 | 24 | breezy |
| 10 | 24 | breezy |
| 11 | 24 | breezy |
| 12 | 23 | breezy |
| 13 | 23 | breezy |
| 14 | 23 | breezy |
| 15 | 23 | breezy |
| 16 | 23 | breezy |
| 17 | 23 | breezy |
| 18 | 22 | breezy |
| 19 | 22 | breezy |
| 20 | 22 | breezy |
| 21 | 22 | breezy |
| 22 | 22 | breezy |
| 23 | 21 | breezy |
| 24 | 21 | breezy |
| 25 | 21 | breezy |
| 26 | 21 | breezy |
| 27 | 21 | breezy |
| 28 | 21 | breezy |
| 29 | 21 | breezy |
| 30 | 21 | breezy |
Sunrise & sunset in September
Daylight runs from about 12 h 36 min at the start of September to 11 h 48 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 48 minutes over September. Sunrise moves from 6:36 AM to 6:50 AM, and sunset from 7:10 PM to 6:36 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) | 12.6 | 12.5 | 12.5 | 12.5 | 12.5 | 12.4 | 12.4 | 12.4 | 12.3 | 12.3 | 12.3 | 12.3 | 12.2 | 12.2 | 12.2 | 12.2 | 12.1 | 12.1 | 12.1 | 12.0 | 12.0 | 12.0 | 12.0 | 11.9 | 11.9 | 11.9 | 11.9 | 11.8 | 11.8 | 11.8 |
| Sunrise (AM) | 6:36 | 6:37 | 6:37 | 6:38 | 6:38 | 6:39 | 6:39 | 6:40 | 6:40 | 6:41 | 6:41 | 6:41 | 6:42 | 6:42 | 6:43 | 6:43 | 6:44 | 6:44 | 6:45 | 6:45 | 6:46 | 6:46 | 6:46 | 6:47 | 6:47 | 6:48 | 6:48 | 6:49 | 6:49 | 6:50 |
| Sunset (PM) | 7:10 | 7:09 | 7:08 | 7:07 | 7:06 | 7:05 | 7:03 | 7:02 | 7:01 | 7:00 | 6:59 | 6:58 | 6:56 | 6:55 | 6:54 | 6:53 | 6:52 | 6:50 | 6:49 | 6:48 | 6:47 | 6:46 | 6:44 | 6:43 | 6:42 | 6:41 | 6:40 | 6:38 | 6:37 | 6:36 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 12.6 | 6:36 | 7:10 |
| 2 | 12.5 | 6:37 | 7:09 |
| 3 | 12.5 | 6:37 | 7:08 |
| 4 | 12.5 | 6:38 | 7:07 |
| 5 | 12.5 | 6:38 | 7:06 |
| 6 | 12.4 | 6:39 | 7:05 |
| 7 | 12.4 | 6:39 | 7:03 |
| 8 | 12.4 | 6:40 | 7:02 |
| 9 | 12.3 | 6:40 | 7:01 |
| 10 | 12.3 | 6:41 | 7:00 |
| 11 | 12.3 | 6:41 | 6:59 |
| 12 | 12.3 | 6:41 | 6:58 |
| 13 | 12.2 | 6:42 | 6:56 |
| 14 | 12.2 | 6:42 | 6:55 |
| 15 | 12.2 | 6:43 | 6:54 |
| 16 | 12.2 | 6:43 | 6:53 |
| 17 | 12.1 | 6:44 | 6:52 |
| 18 | 12.1 | 6:44 | 6:50 |
| 19 | 12.1 | 6:45 | 6:49 |
| 20 | 12.0 | 6:45 | 6:48 |
| 21 | 12.0 | 6:46 | 6:47 |
| 22 | 12.0 | 6:46 | 6:46 |
| 23 | 12.0 | 6:46 | 6:44 |
| 24 | 11.9 | 6:47 | 6:43 |
| 25 | 11.9 | 6:47 | 6:42 |
| 26 | 11.9 | 6:48 | 6:41 |
| 27 | 11.9 | 6:48 | 6:40 |
| 28 | 11.8 | 6:49 | 6:38 |
| 29 | 11.8 | 6:49 | 6:37 |
| 30 | 11.8 | 6:50 | 6:36 |
Solar energy in September
Average shortwave solar energy reaching the ground each day in September, about 6.18 kWh/m².
For context, solar energy here swings from a low near 3.72 kWh/m² to a high of 7.53 kWh/m² in June across the year — September's 6.18 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) | 6.6 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.4 | 6.4 | 6.4 | 6.3 | 6.3 | 6.3 | 6.3 | 6.2 | 6.2 | 6.2 | 6.1 | 6.1 | 6.1 | 6.0 | 6.0 | 6.0 | 5.9 | 5.9 | 5.9 | 5.8 | 5.8 | 5.8 | 5.8 | 5.7 |
| Level | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 6.6 | Intense |
| 2 | 6.5 | Intense |
| 3 | 6.5 | Intense |
| 4 | 6.5 | Intense |
| 5 | 6.5 | Intense |
| 6 | 6.5 | Intense |
| 7 | 6.4 | Intense |
| 8 | 6.4 | Intense |
| 9 | 6.4 | Intense |
| 10 | 6.3 | Intense |
| 11 | 6.3 | Intense |
| 12 | 6.3 | Intense |
| 13 | 6.3 | Intense |
| 14 | 6.2 | Intense |
| 15 | 6.2 | Intense |
| 16 | 6.2 | Intense |
| 17 | 6.1 | Intense |
| 18 | 6.1 | Intense |
| 19 | 6.1 | Intense |
| 20 | 6.0 | Intense |
| 21 | 6.0 | Intense |
| 22 | 6.0 | Bright |
| 23 | 5.9 | Bright |
| 24 | 5.9 | Bright |
| 25 | 5.9 | Bright |
| 26 | 5.8 | Bright |
| 27 | 5.8 | Bright |
| 28 | 5.8 | Bright |
| 29 | 5.8 | Bright |
| 30 | 5.7 | Bright |
Hazard calendar for El Marsa
None of El Marsa's seasonal hazards are active in September. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.
El Marsa sees seasonal dust haze (July–August), heaviest in July.
Is September a good time to visit El Marsa?
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 El Marsa for general sightseeing. The water and warmth also suit a beach or pool day.
What to pack for El Marsa in September
From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In September, El Marsa sees daytime highs around 25°C and nights near 20°C. Pack sun protection. Worth having: light clothes and a windbreaker.
Sea temperature near El Marsa in September
The nearest coast averages about 21°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 October at about 21°C and coldest in February near 17°C.
It's comfortable for a long swim from Aug 4 to Nov 19 — about 3.6 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 | 18 | 18 | 19 | 20 | 20 | 20 | 21 | 21 | 20 | 19 |
| Comfort | Cool | Cool | Cool | Cool | Cool | Cool | Cool | Refreshing | Refreshing | Refreshing | Refreshing | Cool |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 18 | Cool |
| Feb | 17 | Cool |
| Mar | 18 | Cool |
| Apr | 18 | Cool |
| May | 19 | Cool |
| Jun | 20 | Cool |
| Jul | 20 | Cool |
| Aug | 20 | Refreshing |
| Sep | 21 | Refreshing |
| Oct | 21 | Refreshing |
| Nov | 20 | Refreshing |
| Dec | 19 | Cool |
UV index in El Marsa 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 El Marsa peaks around June 22 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 at about 4 (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) | 5 | 6 | 9 | 9 | 10 | 11 | 11 | 11 | 9 | 8 | 5 | 4 |
| Level | Moderate | High | Very high | Very high | Very high | Extreme | Extreme | Extreme | Very high | Very high | Moderate | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 5 | Moderate |
| Feb | 6 | High |
| Mar | 9 | Very high |
| Apr | 9 | Very high |
| May | 10 | Very high |
| Jun | 11 | Extreme |
| Jul | 11 | Extreme |
| Aug | 11 | Extreme |
| Sep | 9 | Very high |
| Oct | 8 | Very high |
| Nov | 5 | Moderate |
| Dec | 4 | Moderate |
Air quality in El Marsa 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 El Marsa is worst in December — around 28 µg/m³ PM2.5 (moderate), about 4.2× the cleanest month (June, 7 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) | 25 | 26 | 14 | 10 | 8 | 7 | 11 | 12 | 9 | 12 | 12 | 28 |
| Level | Moderate | Moderate | Moderate | Good | Good | Good | Good | Good | Good | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 25 | Moderate |
| Feb | 26 | Moderate |
| Mar | 14 | Moderate |
| Apr | 10 | Good |
| May | 8 | Good |
| Jun | 7 | Good |
| Jul | 11 | Good |
| Aug | 12 | Good |
| Sep | 9 | Good |
| Oct | 12 | Moderate |
| Nov | 12 | Moderate |
| Dec | 28 | Moderate |
Where is El Marsa?
El Marsa sits at 27.1°N, 13.4°W, 4 m above sea level, in Western Sahara. The nearest listed city is Laayoune, 23 km away.
Topography around El Marsa
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of El Marsa.
Within 3 km, the terrain around El Marsa has only modest variations in elevation — a maximum elevation change of 16 m around an average of 4 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 74 m; within 80 km, significant variations in elevation — a maximum elevation change of 264 m.
The land around El Marsa is covered by bare terrain (50%) and water (41%) within 3 km, bare terrain (51%) and water (48%) within 16 km, and bare terrain (68%) and water (32%) within 80 km.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for El Marsa (27.0961°, -13.4158°, elevation 4 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).