Ruwais weather in September
In September, Ruwais sees average daytime highs of 39°C and overnight lows near 27°C, with 0 mm of rain across 0 wet days and about 12.1 hours of daylight. It is the 4th-warmest and 10th-wettest month of the year here.
Highs ease over the month, from about 41°C in the first days to 38°C by the end. The sky is clear or mostly clear about 97% of the time in September, and the air most often feels oppressive.
Daylight stretches from about 12 h 30 min at the start of September to 11 h 48 min by month's end. Set against the rest of the year, September is Ruwais's 1st-clearest and 11th-windiest month. For the whole year in context, see Ruwais's year-round climate.
- Daytime high
- 39°
- 4th warmest
- Overnight low
- 27°
- 9th coldest
- Rainfall
- 0 mm
- 0 wet days
- Daylight
- 12 h 06 min
- 6:19 AM – 6:28 PM
- Cloud cover
- 5%
- 1st clearest
- Wind
- 12 km/h
- 11th windiest
- Solar energy
- 6.5 kWh/m²
- Travel score
- 0.6
- out of 10
Ruwais is human settlement.
- Founded
- 1970
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in September
Highs ease over the month, from about 41°C in the first days to 38°C by the end.
A typical September day in Ruwais reaches about 39°C in the afternoon and slips back to 27°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 37°C and 42°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) | 41 | 41 | 41 | 41 | 41 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 39 | 39 | 39 | 39 | 39 | 39 | 39 | 39 | 39 | 38 | 38 | 38 | 38 | 38 | 38 | 38 | 38 |
| Avg low (°C) | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 41 | 28 |
| 2 | 41 | 28 |
| 3 | 41 | 28 |
| 4 | 41 | 28 |
| 5 | 41 | 28 |
| 6 | 40 | 28 |
| 7 | 40 | 28 |
| 8 | 40 | 28 |
| 9 | 40 | 28 |
| 10 | 40 | 27 |
| 11 | 40 | 27 |
| 12 | 40 | 27 |
| 13 | 40 | 27 |
| 14 | 39 | 27 |
| 15 | 39 | 27 |
| 16 | 39 | 27 |
| 17 | 39 | 27 |
| 18 | 39 | 27 |
| 19 | 39 | 27 |
| 20 | 39 | 26 |
| 21 | 39 | 26 |
| 22 | 39 | 26 |
| 23 | 38 | 26 |
| 24 | 38 | 26 |
| 25 | 38 | 26 |
| 26 | 38 | 26 |
| 27 | 38 | 26 |
| 28 | 38 | 26 |
| 29 | 38 | 26 |
| 30 | 38 | 26 |
How September really feels in Ruwais
Once humidity and wind are folded in, September averages 30 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.
The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Ruwais weather by month
How September compares with the rest of the year at a glance. September is the 4th-warmest and 10th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 23° / 14° | 8 | 1.6 | 10.7 | 8.7 |
| Feb | 25° / 15° | 7 | 1.1 | 11.2 | 9.1 |
| Mar | 29° / 17° | 12 | 1.5 | 11.8 | 7.3 |
| Apr | 34° / 21° | 4 | 0.7 | 12.5 | 3.9 |
| May | 39° / 25° | 0 | 0 | 13.2 | 0.8 |
| Jun | 40° / 27° | 0 | 0 | 13.5 | 0.0 |
| Jul | 42° / 29° | 2 | 0.1 | 13.3 | 0.0 |
| Aug | 42° / 29° | 0 | 0.1 | 12.8 | 0.0 |
| Sep | 39° / 27° | 0 | 0 | 12.1 | 0.6 |
| Oct | 35° / 24° | 0 | 0.1 | 11.4 | 3.3 |
| Nov | 30° / 20° | 2 | 0.4 | 10.8 | 7.0 |
| Dec | 25° / 16° | 4 | 0.9 | 10.5 | 8.9 |
Cloud cover in September
The sky is clear or mostly clear about 97% of the time in September, the clearest month of the year.
Beyond those clear spells, partly cloudy skies cover about 1% 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 (%) | 97 | 97 | 97 | 97 | 97 | 98 | 98 | 98 | 98 | 98 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| Cloudier (%) | 3 | 3 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 97 | 3 |
| 2 | 97 | 3 |
| 3 | 97 | 3 |
| 4 | 97 | 3 |
| 5 | 97 | 3 |
| 6 | 98 | 2 |
| 7 | 98 | 2 |
| 8 | 98 | 2 |
| 9 | 98 | 2 |
| 10 | 98 | 2 |
| 11 | 99 | 1 |
| 12 | 99 | 1 |
| 13 | 99 | 1 |
| 14 | 99 | 1 |
| 15 | 99 | 1 |
| 16 | 99 | 1 |
| 17 | 99 | 1 |
| 18 | 99 | 1 |
| 19 | 99 | 1 |
| 20 | 100 | 0 |
| 21 | 100 | 0 |
| 22 | 100 | 0 |
| 23 | 100 | 0 |
| 24 | 100 | 0 |
| 25 | 100 | 0 |
| 26 | 100 | 0 |
| 27 | 100 | 0 |
| 28 | 100 | 0 |
| 29 | 100 | 0 |
| 30 | 100 | 0 |
Chance of precipitation in September
Ruwais gets around 0 mm of rain over 0 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 0% 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 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 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 | 0 |
| 22 | 0 |
| 23 | 0 |
| 24 | 0 |
| 25 | 0 |
| 26 | 0 |
| 27 | 0 |
| 28 | 0 |
| 29 | 0 |
| 30 | 0 |
Humidity in September
Most of September feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, September lands in the oppressive band about 37% of days. Sticky, muggy-or-worse air turns up on roughly 90% 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 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 1 |
| Comfortable (%) | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
| Humid (%) | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 6 | 6 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 8 | 8 | 7 | 7 | 7 | 7 | 7 |
| Muggy (%) | 16 | 16 | 17 | 17 | 17 | 18 | 18 | 18 | 19 | 19 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 21 | 21 | 22 | 22 | 23 |
| Oppressive (%) | 31 | 31 | 31 | 31 | 32 | 32 | 32 | 32 | 32 | 32 | 33 | 33 | 33 | 34 | 35 | 35 | 36 | 37 | 38 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 48 | 48 |
| Miserable (%) | 45 | 45 | 44 | 44 | 43 | 43 | 42 | 42 | 41 | 40 | 39 | 38 | 37 | 37 | 36 | 35 | 33 | 32 | 31 | 29 | 28 | 27 | 25 | 24 | 23 | 21 | 20 | 19 | 18 | 17 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|---|---|---|
| 1 | 0 | 2 | 5 | 16 | 31 | 45 |
| 2 | 0 | 2 | 5 | 16 | 31 | 45 |
| 3 | 0 | 2 | 5 | 17 | 31 | 44 |
| 4 | 0 | 2 | 5 | 17 | 31 | 44 |
| 5 | 0 | 2 | 5 | 17 | 32 | 43 |
| 6 | 0 | 2 | 5 | 18 | 32 | 43 |
| 7 | 1 | 2 | 5 | 18 | 32 | 42 |
| 8 | 1 | 2 | 5 | 18 | 32 | 42 |
| 9 | 1 | 2 | 5 | 19 | 32 | 41 |
| 10 | 1 | 2 | 5 | 19 | 32 | 40 |
| 11 | 1 | 2 | 6 | 20 | 33 | 39 |
| 12 | 1 | 2 | 6 | 20 | 33 | 38 |
| 13 | 1 | 2 | 6 | 20 | 33 | 37 |
| 14 | 1 | 2 | 6 | 20 | 34 | 37 |
| 15 | 1 | 2 | 6 | 20 | 35 | 36 |
| 16 | 1 | 3 | 7 | 20 | 35 | 35 |
| 17 | 1 | 3 | 7 | 20 | 36 | 33 |
| 18 | 1 | 3 | 7 | 20 | 37 | 32 |
| 19 | 1 | 3 | 7 | 20 | 38 | 31 |
| 20 | 1 | 3 | 7 | 20 | 40 | 29 |
| 21 | 1 | 3 | 7 | 20 | 41 | 28 |
| 22 | 1 | 3 | 7 | 20 | 42 | 27 |
| 23 | 2 | 3 | 7 | 20 | 43 | 25 |
| 24 | 2 | 3 | 8 | 20 | 44 | 24 |
| 25 | 2 | 3 | 8 | 20 | 45 | 23 |
| 26 | 2 | 3 | 7 | 21 | 46 | 21 |
| 27 | 2 | 3 | 7 | 21 | 47 | 20 |
| 28 | 1 | 3 | 7 | 22 | 48 | 19 |
| 29 | 1 | 3 | 7 | 22 | 48 | 18 |
| 30 | 1 | 3 | 7 | 23 | 48 | 17 |
Wind in September
Winds average 12 km/h in September.
Across September, daily wind ranges from about 12 km/h on the calmest days to 12 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) | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 |
| Feels | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | 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 | 12 | light breeze |
| 2 | 12 | light breeze |
| 3 | 12 | light breeze |
| 4 | 12 | light breeze |
| 5 | 12 | light breeze |
| 6 | 12 | light breeze |
| 7 | 12 | calm |
| 8 | 12 | calm |
| 9 | 12 | calm |
| 10 | 12 | calm |
| 11 | 12 | calm |
| 12 | 12 | calm |
| 13 | 12 | calm |
| 14 | 12 | calm |
| 15 | 12 | calm |
| 16 | 12 | calm |
| 17 | 12 | calm |
| 18 | 12 | calm |
| 19 | 12 | calm |
| 20 | 12 | calm |
| 21 | 12 | calm |
| 22 | 12 | calm |
| 23 | 12 | calm |
| 24 | 12 | calm |
| 25 | 12 | calm |
| 26 | 12 | calm |
| 27 | 12 | calm |
| 28 | 12 | calm |
| 29 | 12 | calm |
| 30 | 12 | calm |
Sunrise & sunset in September
Daylight runs from about 12 h 30 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 42 minutes over September. Sunrise moves from 6:14 AM to 6:24 AM, and sunset from 6:44 PM to 6:12 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) | 12.5 | 12.5 | 12.4 | 12.4 | 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 | 12.1 | 12.0 | 12.0 | 12.0 | 12.0 | 11.9 | 11.9 | 11.9 | 11.9 | 11.8 | 11.8 | 11.8 |
| Sunrise (AM) | 6:14 | 6:14 | 6:15 | 6:15 | 6:15 | 6:16 | 6:16 | 6:16 | 6:17 | 6:17 | 6:18 | 6:18 | 6:18 | 6:19 | 6:19 | 6:19 | 6:20 | 6:20 | 6:20 | 6:21 | 6:21 | 6:21 | 6:22 | 6:22 | 6:22 | 6:23 | 6:23 | 6:24 | 6:24 | 6:24 |
| Sunset (PM) | 6:44 | 6:43 | 6:42 | 6:40 | 6:39 | 6:38 | 6:37 | 6:36 | 6:35 | 6:34 | 6:33 | 6:32 | 6:31 | 6:30 | 6:29 | 6:28 | 6:26 | 6:25 | 6:24 | 6:23 | 6:22 | 6:21 | 6:20 | 6:19 | 6:18 | 6:17 | 6:16 | 6:15 | 6:13 | 6:12 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 12.5 | 6:14 | 6:44 |
| 2 | 12.5 | 6:14 | 6:43 |
| 3 | 12.4 | 6:15 | 6:42 |
| 4 | 12.4 | 6:15 | 6:40 |
| 5 | 12.4 | 6:15 | 6:39 |
| 6 | 12.4 | 6:16 | 6:38 |
| 7 | 12.4 | 6:16 | 6:37 |
| 8 | 12.3 | 6:16 | 6:36 |
| 9 | 12.3 | 6:17 | 6:35 |
| 10 | 12.3 | 6:17 | 6:34 |
| 11 | 12.3 | 6:18 | 6:33 |
| 12 | 12.2 | 6:18 | 6:32 |
| 13 | 12.2 | 6:18 | 6:31 |
| 14 | 12.2 | 6:19 | 6:30 |
| 15 | 12.2 | 6:19 | 6:29 |
| 16 | 12.1 | 6:19 | 6:28 |
| 17 | 12.1 | 6:20 | 6:26 |
| 18 | 12.1 | 6:20 | 6:25 |
| 19 | 12.1 | 6:20 | 6:24 |
| 20 | 12.0 | 6:21 | 6:23 |
| 21 | 12.0 | 6:21 | 6:22 |
| 22 | 12.0 | 6:21 | 6:21 |
| 23 | 12.0 | 6:22 | 6:20 |
| 24 | 11.9 | 6:22 | 6:19 |
| 25 | 11.9 | 6:22 | 6:18 |
| 26 | 11.9 | 6:23 | 6:17 |
| 27 | 11.9 | 6:23 | 6:16 |
| 28 | 11.8 | 6:24 | 6:15 |
| 29 | 11.8 | 6:24 | 6:13 |
| 30 | 11.8 | 6:24 | 6:12 |
Solar energy in September
Average shortwave solar energy reaching the ground each day in September, about 6.5 kWh/m².
For context, solar energy here swings from a low near 4.23 kWh/m² to a high of 7.7 kWh/m² in May across the year — September's 6.5 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) | 6.8 | 6.8 | 6.8 | 6.7 | 6.7 | 6.7 | 6.7 | 6.7 | 6.6 | 6.6 | 6.6 | 6.6 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.4 | 6.4 | 6.4 | 6.4 | 6.3 | 6.3 | 6.3 | 6.3 | 6.3 | 6.2 | 6.2 | 6.2 |
| Level | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 6.8 | Intense |
| 2 | 6.8 | Intense |
| 3 | 6.8 | Intense |
| 4 | 6.7 | Intense |
| 5 | 6.7 | Intense |
| 6 | 6.7 | Intense |
| 7 | 6.7 | Intense |
| 8 | 6.7 | Intense |
| 9 | 6.6 | Intense |
| 10 | 6.6 | Intense |
| 11 | 6.6 | Intense |
| 12 | 6.6 | Intense |
| 13 | 6.5 | Intense |
| 14 | 6.5 | Intense |
| 15 | 6.5 | Intense |
| 16 | 6.5 | Intense |
| 17 | 6.5 | Intense |
| 18 | 6.5 | Intense |
| 19 | 6.4 | Intense |
| 20 | 6.4 | Intense |
| 21 | 6.4 | Intense |
| 22 | 6.4 | Intense |
| 23 | 6.3 | Intense |
| 24 | 6.3 | Intense |
| 25 | 6.3 | Intense |
| 26 | 6.3 | Intense |
| 27 | 6.3 | Intense |
| 28 | 6.2 | Intense |
| 29 | 6.2 | Intense |
| 30 | 6.2 | Intense |
Hazard calendar for Ruwais
In September, Ruwais sits inside its cyclone season. The full year is below, with each hazard's peak months called out.
Ruwais sits in the North Indian Ocean cyclone zone; the season peaks May and October–November.
Ruwais sees seasonal dust haze (March–August), heaviest in July.
Is September a good time to visit Ruwais?
Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
September is a weaker month for outdoor sightseeing in Ruwais.
What to pack for Ruwais in September
From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In September, Ruwais sees daytime highs around 39°C and nights near 27°C. Pack light clothes and sun protection.
Sea temperature near Ruwais in September
The nearest coast averages about 33°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 34°C and coldest in February near 20°C.
The water stays above 20°C all year — warm enough for a swim any month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 21 | 20 | 22 | 25 | 29 | 31 | 33 | 34 | 33 | 31 | 28 | 24 |
| Comfort | Refreshing | Refreshing | Refreshing | Warm | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Warm | Refreshing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 21 | Refreshing |
| Feb | 20 | Refreshing |
| Mar | 22 | Refreshing |
| Apr | 25 | Warm |
| May | 29 | Tropical |
| Jun | 31 | Tropical |
| Jul | 33 | Tropical |
| Aug | 34 | Tropical |
| Sep | 33 | Tropical |
| Oct | 31 | Tropical |
| Nov | 28 | Warm |
| Dec | 24 | Refreshing |
UV index in Ruwais in September
Clear-sky midday UV in September peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Ruwais peaks around May 20 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 at about 5 (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) | 6 | 9 | 9 | 9 | 10 | 9 | 9 | 10 | 8 | 8 | 6 | 5 |
| Level | High | Very high | Very high | Very high | Very high | Very high | Very high | Very high | Very high | Very high | High | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 6 | High |
| Feb | 9 | Very high |
| Mar | 9 | Very high |
| Apr | 9 | Very high |
| May | 10 | Very high |
| Jun | 9 | Very high |
| Jul | 9 | Very high |
| Aug | 10 | Very high |
| Sep | 8 | Very high |
| Oct | 8 | Very high |
| Nov | 6 | High |
| Dec | 5 | Moderate |
Air quality in Ruwais 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 Ruwais is worst in July — around 85 µg/m³ PM2.5 (unhealthy), about 2.5× the cleanest month (November, 35 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) | 42 | 51 | 61 | 60 | 65 | 69 | 85 | 79 | 58 | 45 | 35 | 35 |
| Level | Poor | Poor | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Poor | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 42 | Poor |
| Feb | 51 | Poor |
| Mar | 61 | Unhealthy |
| Apr | 60 | Unhealthy |
| May | 65 | Unhealthy |
| Jun | 69 | Unhealthy |
| Jul | 85 | Unhealthy |
| Aug | 79 | Unhealthy |
| Sep | 58 | Unhealthy |
| Oct | 45 | Poor |
| Nov | 35 | Moderate |
| Dec | 35 | Moderate |
Where is Ruwais?
Ruwais sits at 24.1°N, 52.7°E, 16 m above sea level, in United Arab Emirates. The nearest listed city is Zayed City, 111 km away.
Topography around Ruwais
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Ruwais.
Within 3 km, the terrain around Ruwais has only modest variations in elevation — a maximum elevation change of 37 m around an average of 11 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 115 m; within 80 km, only modest variations in elevation — a maximum elevation change of 162 m.
The land around Ruwais is covered by bare terrain (69%) and artificial surfaces (30%) within 3 km, bare terrain (61%) and water (33%) within 16 km, and water (51%) and bare terrain (48%) within 80 km.
United Arab Emirates travel facts
- Travel advisory
- Level 3
- Reconsider Travel
- Power plugs
- Type G
- 230 V · 50 Hz
- Prices
- ≈ 63% of US
- price level, 2024
- GDP per capita
- $50,274
- 2024
- Happiness
- 6.8 / 10
- World Happiness, 2025
- Safe drinking water
- 99%
- of population, 2024
- Homicide rate
- 0.7
- per 100k, 2022
- Road deaths
- 8.9
- per 100k/yr, 2019
- Income group
- High
- World Bank
- English
- Low
- EF EPI 487
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 Ruwais (24.1103°, 52.7306°, elevation 16 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). 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).