Rustaq climate
Rustaq (Oman) has a hot desert climate (Köppen BWh). The average temperature over the year is 29 °C84 °F, and about 132 mm5.2 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Rustaq climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 2577 | 1458 | 2068 | 130.5 |
| Feb | 2882 | 1660 | 2271 | 110.5 |
| Mar | 3289 | 1966 | 2578 | 230.9 |
| Apr | 3697 | 2475 | 3086 | 140.6 |
| May | 41105 | 2883 | 3494 | 70.3 |
| Jun | 42108 | 3087 | 3697 | 100.4 |
| Jul | 42107 | 3188 | 3697 | 130.5 |
| Aug | 41105 | 3086 | 3596 | 100.4 |
| Sep | 39102 | 2882 | 3392 | 60.2 |
| Oct | 3596 | 2476 | 3086 | 60.2 |
| Nov | 3086 | 2068 | 2577 | 90.3 |
| Dec | 2680 | 1661 | 2170 | 90.4 |
| Year | 42108 | 1458 | 2984 | 1325.2 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 55% | 39% | 4.5 | 10:50 |
| Feb | 48% | 36% | 5.3 | 11:21 |
| Mar | 40% | 37% | 6.2 | 11:58 |
| Apr | 32% | 37% | 6.8 | 12:40 |
| May | 26% | 30% | 7.4 | 13:15 |
| Jun | 29% | 33% | 7.3 | 13:34 |
| Jul | 34% | 44% | 6.6 | 13:26 |
| Aug | 36% | 41% | 6.6 | 12:56 |
| Sep | 33% | 32% | 6.3 | 12:15 |
| Oct | 35% | 28% | 5.8 | 11:34 |
| Nov | 49% | 32% | 4.8 | 10:59 |
| Dec | 55% | 37% | 4.2 | 10:42 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Rustaq is like
The warmest month is July, with an average high of 42 °C107 °F and a low of 31 °C88 °F. The coldest is January, when highs average 25 °C77 °F and lows 14 °C58 °F. There is a clear seasonal cycle, with 16.5 °C29.7 °F between the average temperature of the warmest and the coolest month.
It is very dry, with only 132 mm5.2 in of precipitation in an average year. The wettest three-month stretch is February–April, which brings 37% of the annual total. Months with less than 20 mm0.8 in on average: April–February. The wettest month is March (23 mm0.9 in), the driest is September (6 mm0.2 in).
Relative humidity ranges from 26% in May to 55% in January. The clearest skies (lowest average cloud amount, 28%) are typical of October. Average wind speed near the ground ranges from 6 km/h (4 mph) in November to 8 km/h (5 mph) in June. Daylight lasts from about 10.7 hours in December to 13.6 hours in June.
Best time to visit Rustaq
Based on these averages, the most comfortable months for sightseeing and outdoor activities are December–February: average highs of 25 °C77 °F to 28 °C82 °F with 9 mm0.4 in to 13 mm0.5 in of precipitation per month.
The most challenging month is June, which is hot, with average highs of 42 °C108 °F.
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Rustaq
- Wetter months (January–April, July) — highs 2577 to 42 °C107 °F, lows 1458 to 31 °C88 °F, about 15 mm0.6 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water.
- Drier months (May and June, August–December) — highs 2680 to 42 °C108 °F, lows 1661 to 30 °C87 °F, about 8 mm0.3 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water.
How Rustaq compares
Compared with Muscat (Seeb), about 84 km to the east, Rustaq is on average 1.3 °C2.3 °F cooler and receives a similar amount of precipitation. The difference is largest in January (1.8 °C3.2 °F cooler).
Of the 32 places in Oman covered by World Climates, Rustaq is the 10th warmest by annual mean temperature and the 13th wettest by annual precipitation. See all of them on the Oman climate page.
Places in other countries with the most similar temperature and rainfall pattern: Fujairah (United Arab Emirates, BWh), Arif Wala (Pakistan, BWh) and Warisan (United Arab Emirates, BWh).
Nearby places
- Saiq (Jebel Akhdar) 42 km · 27 °C81 °F · 143 mm5.6 in
- Bahla 47 km · 28 °C83 °F · 143 mm5.6 in
- Suwaiq 51 km · 29 °C85 °F · 131 mm5.1 in
- Nizwá 52 km · 29 °C84 °F · 143 mm5.6 in
- Samail 55 km · 28 °C82 °F · 130 mm5.1 in
- Muscat (Seeb) 84 km · 30 °C87 °F · 130 mm5.1 in
- Ibri 95 km · 29 °C84 °F · 80 mm3.2 in
- Saham 103 km · 30 °C86 °F · 103 mm4.1 in
Frequently asked questions
What is the warmest month in Rustaq?
July is the warmest month in Rustaq, with an average high of 42 °C (107 °F) and an average low of 31 °C (88 °F).
What is the coldest month in Rustaq?
January is the coldest month, with an average high of 25 °C (77 °F) and an average low of 14 °C (58 °F).
When does it rain the most in Rustaq?
March is the wettest month with about 23 mm (0.9 in) of precipitation; September is the driest with about 6 mm (0.2 in).
What is the best time to visit Rustaq?
Judging by long-term averages, the most comfortable months are December–February.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 539 m, while Rustaq lies at about 341 m. Temperatures on this page were therefore adjusted by +1.3 °C2.3 °F using the standard lapse rate of 6.5 °C per 1,000 m.