Arzew weather in September
In September, Arzew sees average daytime highs of 28°C and overnight lows near 21°C, with 16 mm of rain across 3.6 wet days and about 12.2 hours of daylight. It is the 3rd-warmest and 9th-wettest month of the year here.
Highs ease over the month, from about 29°C in the first days to 26°C by the end. The sky is clear or mostly clear about 61% of the time in September, and the air most often feels muggy.
Daylight stretches from about 12 h 48 min at the start of September to 11 h 42 min by month's end. Set against the rest of the year, September is Arzew's 4th-clearest and 9th-windiest month. For the whole year in context, see Arzew's year-round climate.
- Daytime high
- 28°
- 3rd warmest
- Overnight low
- 21°
- 10th coldest
- Rainfall
- 16 mm
- 3.6 wet days
- Daylight
- 12 h 12 min
- 6:49 AM – 7:02 PM
- Cloud cover
- 37%
- 4th clearest
- Wind
- 9 km/h
- 9th windiest
- Solar energy
- 5.48 kWh/m²
- Travel score
- 7.4
- out of 10
Arzew is municipality in Oran, Algeria.
- Density
- 909/km²
- people per km²
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in September
Highs ease over the month, from about 29°C in the first days to 26°C by the end.
A typical September day in Arzew reaches about 28°C in the afternoon and slips back to 21°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 30°C. Set against its neighbours, September runs about 3°C cooler than August and about 4°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) | 30 | 30 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 26 | 26 | 26 | 26 |
| Avg low (°C) | 23 | 23 | 23 | 23 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 20 | 20 | 20 | 20 | 20 | 20 | 20 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 30 | 23 |
| 2 | 30 | 23 |
| 3 | 29 | 23 |
| 4 | 29 | 23 |
| 5 | 29 | 22 |
| 6 | 29 | 22 |
| 7 | 29 | 22 |
| 8 | 29 | 22 |
| 9 | 29 | 22 |
| 10 | 29 | 22 |
| 11 | 28 | 22 |
| 12 | 28 | 22 |
| 13 | 28 | 22 |
| 14 | 28 | 21 |
| 15 | 28 | 21 |
| 16 | 28 | 21 |
| 17 | 28 | 21 |
| 18 | 28 | 21 |
| 19 | 27 | 21 |
| 20 | 27 | 21 |
| 21 | 27 | 21 |
| 22 | 27 | 21 |
| 23 | 27 | 21 |
| 24 | 27 | 20 |
| 25 | 27 | 20 |
| 26 | 27 | 20 |
| 27 | 26 | 20 |
| 28 | 26 | 20 |
| 29 | 26 | 20 |
| 30 | 26 | 20 |
How September really feels in Arzew
Once humidity and wind are folded in, September averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.
September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Arzew 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 | 16° / 10° | 46 | 8.2 | 9.8 | 5.4 |
| Feb | 16° / 11° | 38 | 7.3 | 10.6 | 5.7 |
| Mar | 18° / 12° | 40 | 6.8 | 11.7 | 6.6 |
| Apr | 20° / 14° | 37 | 6 | 12.9 | 7.2 |
| May | 23° / 17° | 22 | 3.8 | 13.9 | 8.2 |
| Jun | 27° / 20° | 5 | 1.1 | 14.4 | 8.5 |
| Jul | 30° / 23° | 1 | 0.1 | 14.2 | 6.9 |
| Aug | 31° / 23° | 4 | 0.6 | 13.4 | 6.4 |
| Sep | 28° / 21° | 16 | 3.6 | 12.2 | 7.4 |
| Oct | 24° / 18° | 30 | 5.4 | 11.1 | 7.9 |
| Nov | 20° / 14° | 58 | 7.8 | 10.1 | 6.8 |
| Dec | 17° / 12° | 42 | 7 | 9.6 | 6.1 |
Cloud cover in September
The sky is clear or mostly clear about 61% of the time in September.
Beyond those clear spells, partly cloudy skies cover about 15% of September, with mostly cloudy or overcast conditions the remaining 24%. 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 (%) | 86 | 84 | 84 | 82 | 82 | 80 | 79 | 79 | 77 | 76 | 76 | 75 | 75 | 74 | 74 | 73 | 73 | 73 | 73 | 72 | 72 | 72 | 72 | 71 | 72 | 72 | 73 | 73 | 73 | 73 |
| Cloudier (%) | 14 | 16 | 16 | 18 | 18 | 20 | 21 | 21 | 23 | 24 | 24 | 25 | 25 | 26 | 26 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 29 | 28 | 28 | 27 | 27 | 27 | 27 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 86 | 14 |
| 2 | 84 | 16 |
| 3 | 84 | 16 |
| 4 | 82 | 18 |
| 5 | 82 | 18 |
| 6 | 80 | 20 |
| 7 | 79 | 21 |
| 8 | 79 | 21 |
| 9 | 77 | 23 |
| 10 | 76 | 24 |
| 11 | 76 | 24 |
| 12 | 75 | 25 |
| 13 | 75 | 25 |
| 14 | 74 | 26 |
| 15 | 74 | 26 |
| 16 | 73 | 27 |
| 17 | 73 | 27 |
| 18 | 73 | 27 |
| 19 | 73 | 27 |
| 20 | 72 | 28 |
| 21 | 72 | 28 |
| 22 | 72 | 28 |
| 23 | 72 | 28 |
| 24 | 71 | 29 |
| 25 | 72 | 28 |
| 26 | 72 | 28 |
| 27 | 73 | 27 |
| 28 | 73 | 27 |
| 29 | 73 | 27 |
| 30 | 73 | 27 |
Chance of precipitation in September
Arzew gets around 16 mm of rain over 3.6 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 11% and peaks near 16% on the wettest days. The odds climb toward the end of the month.
| 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 (%) | 4 | 4 | 5 | 5 | 6 | 6 | 7 | 7 | 8 | 8 | 9 | 9 | 10 | 10 | 11 | 12 | 12 | 13 | 13 | 14 | 14 | 15 | 15 | 15 | 16 | 16 | 15 | 15 | 15 | 15 |
| Rain chance (%) | |
|---|---|
| 1 | 4 |
| 2 | 4 |
| 3 | 5 |
| 4 | 5 |
| 5 | 6 |
| 6 | 6 |
| 7 | 7 |
| 8 | 7 |
| 9 | 8 |
| 10 | 8 |
| 11 | 9 |
| 12 | 9 |
| 13 | 10 |
| 14 | 10 |
| 15 | 11 |
| 16 | 12 |
| 17 | 12 |
| 18 | 13 |
| 19 | 13 |
| 20 | 14 |
| 21 | 14 |
| 22 | 15 |
| 23 | 15 |
| 24 | 15 |
| 25 | 16 |
| 26 | 16 |
| 27 | 15 |
| 28 | 15 |
| 29 | 15 |
| 30 | 15 |
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 41% of days. Sticky, muggy-or-worse air turns up on roughly 58% 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 2 | 2 |
| Comfortable (%) | 4 | 4 | 4 | 4 | 4 | 5 | 5 | 6 | 7 | 7 | 8 | 9 | 10 | 11 | 11 | 12 | 13 | 13 | 14 | 14 | 14 | 15 | 15 | 15 | 15 | 15 | 16 | 16 | 16 | 16 |
| Humid (%) | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 27 | 28 | 28 | 29 | 29 | 30 | 30 | 31 | 31 | 32 | 33 | 34 | 36 | 37 | 38 | 39 | 41 | 42 | 43 | 44 | 45 |
| Muggy (%) | 43 | 44 | 44 | 44 | 45 | 45 | 45 | 45 | 44 | 44 | 44 | 43 | 43 | 43 | 42 | 42 | 42 | 41 | 41 | 41 | 40 | 40 | 39 | 39 | 38 | 38 | 37 | 36 | 35 | 34 |
| Oppressive (%) | 33 | 31 | 30 | 28 | 27 | 26 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | 15 | 14 | 13 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 4 | 3 |
| Miserable (%) | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|---|---|---|
| 1 | 0 | 4 | 19 | 43 | 33 | 1 |
| 2 | 0 | 4 | 20 | 44 | 31 | 1 |
| 3 | 0 | 4 | 21 | 44 | 30 | 1 |
| 4 | 0 | 4 | 22 | 44 | 28 | 1 |
| 5 | 0 | 4 | 23 | 45 | 27 | 1 |
| 6 | 0 | 5 | 24 | 45 | 26 | 0 |
| 7 | 0 | 5 | 25 | 45 | 24 | 0 |
| 8 | 0 | 6 | 26 | 45 | 23 | 0 |
| 9 | 1 | 7 | 27 | 44 | 22 | 0 |
| 10 | 1 | 7 | 27 | 44 | 21 | 0 |
| 11 | 1 | 8 | 28 | 44 | 20 | 0 |
| 12 | 1 | 9 | 28 | 43 | 19 | 0 |
| 13 | 1 | 10 | 29 | 43 | 18 | 0 |
| 14 | 1 | 11 | 29 | 43 | 17 | 0 |
| 15 | 1 | 11 | 30 | 42 | 16 | 0 |
| 16 | 1 | 12 | 30 | 42 | 15 | 0 |
| 17 | 1 | 13 | 31 | 42 | 14 | 0 |
| 18 | 1 | 13 | 31 | 41 | 13 | 0 |
| 19 | 1 | 14 | 32 | 41 | 13 | 0 |
| 20 | 0 | 14 | 33 | 41 | 12 | 0 |
| 21 | 0 | 14 | 34 | 40 | 11 | 0 |
| 22 | 0 | 15 | 36 | 40 | 10 | 0 |
| 23 | 0 | 15 | 37 | 39 | 9 | 0 |
| 24 | 0 | 15 | 38 | 39 | 8 | 0 |
| 25 | 1 | 15 | 39 | 38 | 7 | 0 |
| 26 | 1 | 15 | 41 | 38 | 6 | 0 |
| 27 | 1 | 16 | 42 | 37 | 5 | 0 |
| 28 | 1 | 16 | 43 | 36 | 4 | 0 |
| 29 | 2 | 16 | 44 | 35 | 4 | 0 |
| 30 | 2 | 16 | 45 | 34 | 3 | 0 |
Wind in September
Winds average 9 km/h in September.
Across September, daily wind ranges from about 9 km/h on the calmest days to 10 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) | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 9 | calm |
| 2 | 9 | calm |
| 3 | 9 | calm |
| 4 | 9 | calm |
| 5 | 9 | calm |
| 6 | 9 | calm |
| 7 | 9 | calm |
| 8 | 9 | calm |
| 9 | 10 | calm |
| 10 | 10 | calm |
| 11 | 10 | calm |
| 12 | 10 | calm |
| 13 | 10 | calm |
| 14 | 10 | calm |
| 15 | 10 | calm |
| 16 | 10 | calm |
| 17 | 9 | calm |
| 18 | 9 | calm |
| 19 | 9 | calm |
| 20 | 9 | calm |
| 21 | 9 | calm |
| 22 | 9 | calm |
| 23 | 9 | calm |
| 24 | 9 | calm |
| 25 | 9 | calm |
| 26 | 9 | calm |
| 27 | 9 | calm |
| 28 | 9 | calm |
| 29 | 9 | calm |
| 30 | 9 | calm |
Sunrise & sunset in September
Daylight runs from about 12 h 48 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 66 minutes over September. Sunrise moves from 6:37 AM to 7:00 AM, and sunset from 7:25 PM to 6:41 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) | 12.8 | 12.8 | 12.7 | 12.7 | 12.6 | 12.6 | 12.6 | 12.5 | 12.5 | 12.5 | 12.4 | 12.4 | 12.3 | 12.3 | 12.3 | 12.2 | 12.2 | 12.1 | 12.1 | 12.1 | 12.0 | 12.0 | 12.0 | 11.9 | 11.9 | 11.8 | 11.8 | 11.8 | 11.7 | 11.7 |
| Sunrise (AM) | 6:37 | 6:38 | 6:39 | 6:39 | 6:40 | 6:41 | 6:42 | 6:43 | 6:43 | 6:44 | 6:45 | 6:46 | 6:47 | 6:47 | 6:48 | 6:49 | 6:50 | 6:50 | 6:51 | 6:52 | 6:53 | 6:54 | 6:54 | 6:55 | 6:56 | 6:57 | 6:58 | 6:59 | 6:59 | 7:00 |
| Sunset (PM) | 7:25 | 7:23 | 7:22 | 7:20 | 7:19 | 7:17 | 7:16 | 7:14 | 7:13 | 7:11 | 7:10 | 7:08 | 7:07 | 7:05 | 7:04 | 7:02 | 7:01 | 6:59 | 6:58 | 6:56 | 6:55 | 6:53 | 6:52 | 6:50 | 6:49 | 6:47 | 6:45 | 6:44 | 6:42 | 6:41 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 12.8 | 6:37 | 7:25 |
| 2 | 12.8 | 6:38 | 7:23 |
| 3 | 12.7 | 6:39 | 7:22 |
| 4 | 12.7 | 6:39 | 7:20 |
| 5 | 12.6 | 6:40 | 7:19 |
| 6 | 12.6 | 6:41 | 7:17 |
| 7 | 12.6 | 6:42 | 7:16 |
| 8 | 12.5 | 6:43 | 7:14 |
| 9 | 12.5 | 6:43 | 7:13 |
| 10 | 12.5 | 6:44 | 7:11 |
| 11 | 12.4 | 6:45 | 7:10 |
| 12 | 12.4 | 6:46 | 7:08 |
| 13 | 12.3 | 6:47 | 7:07 |
| 14 | 12.3 | 6:47 | 7:05 |
| 15 | 12.3 | 6:48 | 7:04 |
| 16 | 12.2 | 6:49 | 7:02 |
| 17 | 12.2 | 6:50 | 7:01 |
| 18 | 12.1 | 6:50 | 6:59 |
| 19 | 12.1 | 6:51 | 6:58 |
| 20 | 12.1 | 6:52 | 6:56 |
| 21 | 12.0 | 6:53 | 6:55 |
| 22 | 12.0 | 6:54 | 6:53 |
| 23 | 12.0 | 6:54 | 6:52 |
| 24 | 11.9 | 6:55 | 6:50 |
| 25 | 11.9 | 6:56 | 6:49 |
| 26 | 11.8 | 6:57 | 6:47 |
| 27 | 11.8 | 6:58 | 6:45 |
| 28 | 11.8 | 6:59 | 6:44 |
| 29 | 11.7 | 6:59 | 6:42 |
| 30 | 11.7 | 7:00 | 6:41 |
Solar energy in September
Average shortwave solar energy reaching the ground each day in September, about 5.48 kWh/m².
For context, solar energy here swings from a low near 2.49 kWh/m² to a high of 7.6 kWh/m² in June across the year — September's 5.48 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) | 6.2 | 6.2 | 6.1 | 6.1 | 6.0 | 6.0 | 5.9 | 5.9 | 5.8 | 5.8 | 5.7 | 5.7 | 5.6 | 5.6 | 5.5 | 5.5 | 5.4 | 5.4 | 5.3 | 5.3 | 5.2 | 5.2 | 5.1 | 5.1 | 5.0 | 5.0 | 5.0 | 4.9 | 4.9 | 4.8 |
| Level | Intense | Intense | Intense | Intense | Intense | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 6.2 | Intense |
| 2 | 6.2 | Intense |
| 3 | 6.1 | Intense |
| 4 | 6.1 | Intense |
| 5 | 6.0 | Intense |
| 6 | 6.0 | Bright |
| 7 | 5.9 | Bright |
| 8 | 5.9 | Bright |
| 9 | 5.8 | Bright |
| 10 | 5.8 | Bright |
| 11 | 5.7 | Bright |
| 12 | 5.7 | Bright |
| 13 | 5.6 | Bright |
| 14 | 5.6 | Bright |
| 15 | 5.5 | Bright |
| 16 | 5.5 | Bright |
| 17 | 5.4 | Bright |
| 18 | 5.4 | Bright |
| 19 | 5.3 | Bright |
| 20 | 5.3 | Bright |
| 21 | 5.2 | Bright |
| 22 | 5.2 | Bright |
| 23 | 5.1 | Bright |
| 24 | 5.1 | Bright |
| 25 | 5.0 | Bright |
| 26 | 5.0 | Bright |
| 27 | 5.0 | Bright |
| 28 | 4.9 | Bright |
| 29 | 4.9 | Bright |
| 30 | 4.8 | Bright |
Hazard calendar for Arzew
None of Arzew's seasonal hazards are active in September. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.
Arzew sees seasonal dust haze (July–August), heaviest in July.
Is September a good time to visit Arzew?
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 Arzew for general sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Arzew in September
From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In September, Arzew sees daytime highs around 28°C and nights near 21°C. Pack light clothes. Worth having: sun protection. About 4 days see rain.
Sea temperature near Arzew in September
The nearest coast averages about 24°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 25°C and coldest in February near 15°C.
It's comfortable for a long swim from Jun 7 to Oct 30 — about 4.8 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 16 | 15 | 16 | 17 | 18 | 21 | 23 | 25 | 24 | 21 | 19 | 17 |
| Comfort | Cool | Cool | Cool | Cool | Cool | Refreshing | Refreshing | Warm | Refreshing | Refreshing | Cool | Cool |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 16 | Cool |
| Feb | 15 | Cool |
| Mar | 16 | Cool |
| Apr | 17 | Cool |
| May | 18 | Cool |
| Jun | 21 | Refreshing |
| Jul | 23 | Refreshing |
| Aug | 25 | Warm |
| Sep | 24 | Refreshing |
| Oct | 21 | Refreshing |
| Nov | 19 | Cool |
| Dec | 17 | Cool |
UV index in Arzew in September
Clear-sky midday UV in September peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Arzew peaks around July 18 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 2 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 3 | 4 | 7 | 7 | 8 | 8 | 9 | 8 | 7 | 5 | 3 | 2 |
| Level | Moderate | Moderate | High | High | Very high | Very high | Very high | Very high | Very high | Moderate | Moderate | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 3 | Moderate |
| Feb | 4 | Moderate |
| Mar | 7 | High |
| Apr | 7 | High |
| May | 8 | Very high |
| Jun | 8 | Very high |
| Jul | 9 | Very high |
| Aug | 8 | Very high |
| Sep | 7 | Very high |
| Oct | 5 | Moderate |
| Nov | 3 | Moderate |
| Dec | 2 | Low |
Air quality in Arzew 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 Arzew is worst in March — around 26 µg/m³ PM2.5 (moderate), about 1.6× the cleanest month (June, 16 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) | 17 | 21 | 26 | 20 | 16 | 16 | 19 | 19 | 22 | 20 | 17 | 18 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 17 | Moderate |
| Feb | 21 | Moderate |
| Mar | 26 | Moderate |
| Apr | 20 | Moderate |
| May | 16 | Moderate |
| Jun | 16 | Moderate |
| Jul | 19 | Moderate |
| Aug | 19 | Moderate |
| Sep | 22 | Moderate |
| Oct | 20 | Moderate |
| Nov | 17 | Moderate |
| Dec | 18 | Moderate |
Where is Arzew?
Arzew sits at 35.9°N, 0.3°W, 10 m above sea level, in Algeria. The nearest listed city is Aïn el Bya, 5.0 km away.
Topography around Arzew
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Arzew.
Within 3 km, the terrain around Arzew has only modest variations in elevation — a maximum elevation change of 227 m around an average of 59 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 627 m; within 80 km, large variations in elevation — a maximum elevation change of 1,033 m.
The land around Arzew is covered by grassland (41%), artificial surfaces (20%) and water (20%) within 3 km, water (51%) and cropland (22%) within 16 km, and water (35%), cropland (33%) and grassland (20%) within 80 km.
Algeria travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type C / F
- 230 V · 50 Hz
- Prices
- ≈ 33% of US
- price level, 2025
- GDP per capita
- $6,051
- 2025
- Happiness
- 5.7 / 10
- World Happiness, 2025
- Safe drinking water
- 69%
- of population, 2024
- Homicide rate
- 1.2
- per 100k, 2023
- Road deaths
- 20.9
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- Low
- EF EPI 468
- 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 Arzew (35.8505°, -0.318°, elevation 10 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).