Al Diwaniyah climate
Al Diwaniyah (Iraq) has a hot desert climate (Köppen BWh). The average temperature over the year is 25 °C77 °F, and about 147 mm5.8 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Al Diwaniyah climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin | Frost days |
|---|---|---|---|---|---|
| Jan | 1762 | 438 | 1050 | 291.1 | 3 |
| Feb | 2068 | 642 | 1355 | 220.9 | 2 |
| Mar | 2679 | 1051 | 1865 | 190.7 | 0 |
| Apr | 3290 | 1661 | 2475 | 180.7 | 0 |
| May | 39102 | 2373 | 3188 | 70.3 | 0 |
| Jun | 45112 | 2882 | 3697 | 00.0 | 0 |
| Jul | 47116 | 3086 | 38101 | 00.0 | 0 |
| Aug | 47116 | 3086 | 38101 | 00.0 | 0 |
| Sep | 43109 | 2678 | 3493 | 10.0 | 0 |
| Oct | 3596 | 2068 | 2882 | 90.4 | 0 |
| Nov | 2476 | 1152 | 1864 | 241.0 | 0 |
| Dec | 1865 | 642 | 1253 | 180.7 | 2 |
| Year | 47116 | 438 | 2577 | 1475.8 | 6 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total. Frost days are for the whole grid cell.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 58% | 33% | 3.4 | 10:16 |
| Feb | 53% | 32% | 4.4 | 11:00 |
| Mar | 41% | 33% | 5.5 | 11:54 |
| Apr | 34% | 36% | 6.3 | 12:56 |
| May | 23% | 31% | 7.1 | 13:47 |
| Jun | 15% | 11% | 8.0 | 14:14 |
| Jul | 14% | 10% | 7.7 | 14:03 |
| Aug | 15% | 12% | 7.1 | 13:19 |
| Sep | 17% | 14% | 6.2 | 12:19 |
| Oct | 25% | 27% | 4.7 | 11:20 |
| Nov | 44% | 32% | 3.6 | 10:28 |
| Dec | 56% | 33% | 3.1 | 10:04 |
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 Diwaniyah is like
The warmest month is July, with an average high of 47 °C116 °F and a low of 30 °C86 °F. The coldest is January, when highs average 17 °C62 °F and lows 4 °C38 °F. Seasons are strongly marked: the warmest month is on average 28.3 °C50.9 °F warmer than the coldest.
It is very dry, with only 147 mm5.8 in of precipitation in an average year. The wettest three-month stretch is November–January, which brings 49% of the annual total. Months with less than 20 mm0.8 in on average: March–October and December. The wettest month is January (29 mm1.1 in), the driest is August (0 mm0.0 in).
Relative humidity ranges from 14% in July to 58% in January. The clearest skies (lowest average cloud amount, 10%) are typical of July. Average wind speed near the ground ranges from 8 km/h (5 mph) in November to 15 km/h (9 mph) in July. Daylight lasts from about 10.1 hours in December to 14.2 hours in June.
Best time to visit Al Diwaniyah
Based on these averages, the most comfortable months for sightseeing and outdoor activities are February and March and November and December: average highs of 18 °C65 °F to 26 °C79 °F with 18 mm0.7 in to 24 mm1.0 in of precipitation per month.
The most challenging month is August, which is hot, with average highs of 47 °C116 °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 Al Diwaniyah
- Winter (December–February) — highs 1762 to 20 °C68 °F, lows 438 to 6 °C42 °F, about 23 mm0.9 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket and an extra layer for the cooler mornings and evenings.
- Spring (March–May) — highs 2679 to 39 °C102 °F, lows 1051 to 23 °C73 °F, about 14 mm0.6 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water and an extra layer for the cooler mornings and evenings.
- Summer (June–August) — highs 45112 to 47 °C116 °F, lows 2882 to 30 °C86 °F, about 0 mm0.0 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water.
- Autumn (September–November) — highs 2476 to 43 °C109 °F, lows 1152 to 26 °C78 °F, about 11 mm0.4 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water.
How Al Diwaniyah compares
Compared with Najaf, about 55 km to the west, Al Diwaniyah is on average 0.5 °C0.9 °F warmer and receives 40% more precipitation (147 mm5.8 in vs 105 mm4.1 in). The difference is largest in August (0.7 °C1.3 °F warmer).
Of the 39 places in Iraq covered by World Climates, Al Diwaniyah is the 12th warmest by annual mean temperature and the 26th wettest by annual precipitation. See all of them on the Iraq climate page.
Places in other countries with the most similar temperature and rainfall pattern: Dezful (Iran, BSh), Khorramshahr (Iran, BWh) and Ahvaz (Iran, BWh).
Nearby places
- Najaf 55 km · 25 °C76 °F · 105 mm4.1 in
- Al Hillah 71 km · 24 °C76 °F · 147 mm5.8 in
- As Samawah 81 km · 25 °C77 °F · 106 mm4.2 in
- Al-Kut 102 km · 25 °C77 °F · 238 mm9.4 in
- Al-Musayab 106 km · 24 °C75 °F · 181 mm7.1 in
- Qalat Sukkar 109 km · 26 °C78 °F · 199 mm7.8 in
- Karbala 109 km · 24 °C75 °F · 120 mm4.7 in
- Al Mahmudiyah 130 km · 24 °C76 °F · 181 mm7.1 in
Frequently asked questions
What is the warmest month in Al Diwaniyah?
July is the warmest month in Al Diwaniyah, with an average high of 47 °C (116 °F) and an average low of 30 °C (86 °F).
What is the coldest month in Al Diwaniyah?
January is the coldest month, with an average high of 17 °C (62 °F) and an average low of 4 °C (38 °F).
When does it rain the most in Al Diwaniyah?
January is the wettest month with about 29 mm (1.1 in) of precipitation; August is the driest with about 0 mm (0.0 in).
What is the best time to visit Al Diwaniyah?
Judging by long-term averages, the most comfortable months are February and March and November and December.
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.