Dubai is warmest in August, averaging 40° by day and 32° at night. The wettest month is January with 40 mm, and the year brings about 179 mm in total.
Month by month
| Month | High | Low | Rain | Sea | Daylight | Good for |
|---|---|---|---|---|---|---|
| January | 24° | 18° | 40 mm | 22° | 10.6 h | Sightseeing |
| February | 25° | 18° | 28 mm | 22° | 11.1 h | Beach weather |
| March | 28° | 20° | 16 mm | 23° | 11.8 h | Beach weather |
| April | 31° | 24° | 18 mm | 26° | 12.6 h | Beach weather |
| May | 35° | 27° | 6 mm | 29° | 13.2 h | Beach weather |
| June | 39° | 29° | 3 mm | 32° | 13.6 h | Very hot |
| July | 40° | 32° | 6 mm | 34° | 13.4 h | Very hot |
| August | 40° | 32° | 34 mm | 34° | 12.9 h | Very hot |
| September | 38° | 31° | 3 mm | 33° | 12.1 h | Very hot |
| October | 35° | 28° | 3 mm | 32° | 11.4 h | Beach weather |
| November | 31° | 24° | 6 mm | 28° | 10.8 h | Beach weather |
| December | 27° | 20° | 16 mm | 25° | 10.4 h | Beach weather |
High and low are average daily maximum and minimum, rain is typical monthly total, sea is the average surface temperature, daylight is the hours between sunrise and sunset mid-month. Climate normals from NASA POWER and NOAA MUR — averages, not promises.
When to go
Beach weather: February, March, April, May, October, November and December — highs around 30°, nights no colder than 18°, and at most 28 mm of rain in a month. The sea sits at 22–32° then.
Walking the city: January — highs of 24–24° and no more than 40 mm of rain a month.
Serious heat: In June, July, August and September the average high reaches 40°.