Al Hallaniyat Islands climate
Al Hallaniyat Islands (Oman) has a hot desert climate (Köppen BWh). The average temperature over the year is 26 °C78 °F, and about 194 mm7.6 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Al Hallaniyat Islands climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 2476 | 2272 | 2374 | 60.2 |
| Feb | 2476 | 2373 | 2474 | 100.4 |
| Mar | 2679 | 2476 | 2577 | 361.4 |
| Apr | 2882 | 2780 | 2781 | 210.8 |
| May | 2984 | 2882 | 2983 | 522.0 |
| Jun | 2883 | 2781 | 2882 | 170.7 |
| Jul | 2578 | 2576 | 2577 | 110.4 |
| Aug | 2576 | 2475 | 2475 | 100.4 |
| Sep | 2678 | 2576 | 2577 | 110.4 |
| Oct | 2781 | 2679 | 2780 | 70.3 |
| Nov | 2781 | 2679 | 2780 | 80.3 |
| Dec | 2678 | 2475 | 2577 | 50.2 |
| Year | 2984 | 2272 | 2678 | 1947.6 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 66% | 27% | 5.1 | 11:11 |
| Feb | 69% | 22% | 6.0 | 11:33 |
| Mar | 73% | 21% | 6.7 | 11:00 |
| Apr | 78% | 21% | 7.1 | 12:31 |
| May | 84% | 25% | 7.0 | 12:57 |
| Jun | 89% | 50% | 6.3 | 13:10 |
| Jul | 92% | 59% | 5.9 | 13:05 |
| Aug | 93% | 55% | 6.1 | 12:43 |
| Sep | 91% | 36% | 6.2 | 12:13 |
| Oct | 77% | 20% | 6.1 | 11:43 |
| Nov | 70% | 23% | 5.3 | 11:17 |
| Dec | 68% | 26% | 4.8 | 11:05 |
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 Al Hallaniyat Islands is like
The warmest month is May, with an average high of 29 °C84 °F and a low of 28 °C82 °F. The coldest is January, when highs average 24 °C76 °F and lows 22 °C72 °F. Seasonal differences are small — just 5.2 °C9.4 °F between the warmest and the coolest month.
It is dry, with about 194 mm7.6 in of precipitation per year. The wettest three-month stretch is March–May, which brings 56% of the annual total. Months with less than 20 mm0.8 in on average: June–February. The wettest month is May (52 mm2.0 in), the driest is December (5 mm0.2 in).
Relative humidity ranges from 66% in January to 93% in August. The clearest skies (lowest average cloud amount, 20%) are typical of October. Average wind speed near the ground ranges from 12 km/h (8 mph) in October to 29 km/h (18 mph) in July. Daylight lasts from about 11.1 hours in December to 13.2 hours in June.
Best time to visit Al Hallaniyat Islands
Based on these averages, the most comfortable months for sightseeing and outdoor activities are October–April and August: average highs of 24 °C76 °F to 28 °C82 °F with 5 mm0.2 in to 36 mm1.4 in of precipitation per month.
The most challenging month is July, which is humid (92% relative humidity).
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 Al Hallaniyat Islands
- Wetter months (March–June) — highs 2679 to 29 °C84 °F, lows 2476 to 28 °C82 °F, about 31 mm1.2 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses.
- Drier months (July–February) — highs 2476 to 27 °C81 °F, lows 2272 to 26 °C79 °F, about 8 mm0.3 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses.
How Al Hallaniyat Islands compares
Compared with Thumrait, about 211 km to the west, Al Hallaniyat Islands is on average 0.4 °C0.8 °F cooler and receives 51% more precipitation (194 mm7.6 in vs 128 mm5.1 in). The difference is largest in August (6 °C10.8 °F cooler).
Of the 32 places in Oman covered by World Climates, Al Hallaniyat Islands is the 27th warmest by annual mean temperature and the 6th 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: Arabi (Ethiopia, BSh), Marka (Somalia, BSh) and Mogadishu (Somalia, BWh).
Nearby places
- Marmul 113 km · 26 °C80 °F · 163 mm6.4 in
- Jabal Samhan 130 km · 25 °C77 °F · 301 mm12 in
- Qairoon Hairiti 208 km · 25 °C77 °F · 364 mm14 in
- Thumrait 211 km · 26 °C79 °F · 128 mm5.1 in
- Salalah 212 km · 27 °C81 °F · 364 mm14 in
- Mina Salalah (Port of Salalah) 224 km · 24 °C76 °F · 274 mm11 in
- Raysut 224 km · 24 °C76 °F · 274 mm11 in
- Hayma 274 km · 28 °C83 °F · 73 mm2.9 in
Frequently asked questions
What is the warmest month in Al Hallaniyat Islands?
May is the warmest month in Al Hallaniyat Islands, with an average high of 29 °C (84 °F) and an average low of 28 °C (82 °F).
What is the coldest month in Al Hallaniyat Islands?
January is the coldest month, with an average high of 24 °C (76 °F) and an average low of 22 °C (72 °F).
When does it rain the most in Al Hallaniyat Islands?
May is the wettest month with about 52 mm (2.0 in) of precipitation; December is the driest with about 5 mm (0.2 in).
What is the best time to visit Al Hallaniyat Islands?
Judging by long-term averages, the most comfortable months are October–April and August.
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 location used for this former weather-station page is approximate.