Nasiriyah climate
Nasiriyah (Iraq) has a hot desert climate (Köppen BWh). The average temperature over the year is 26 °C79 °F, and about 100 mm3.9 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Nasiriyah climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin | Frost days |
|---|---|---|---|---|---|
| Jan | 1864 | 540 | 1152 | 210.8 | 2 |
| Feb | 2170 | 744 | 1457 | 120.5 | 1 |
| Mar | 2781 | 1253 | 2067 | 100.4 | 0 |
| Apr | 3392 | 1864 | 2578 | 100.4 | 0 |
| May | 40105 | 2476 | 3290 | 40.2 | 0 |
| Jun | 45114 | 2883 | 3798 | 00.0 | 0 |
| Jul | 47117 | 3188 | 39102 | 00.0 | 0 |
| Aug | 47117 | 3187 | 39102 | 00.0 | 0 |
| Sep | 43110 | 2680 | 3595 | 00.0 | 0 |
| Oct | 3697 | 2170 | 2984 | 70.3 | 0 |
| Nov | 2578 | 1254 | 1966 | 170.7 | 0 |
| Dec | 1966 | 644 | 1355 | 170.7 | 1 |
| Year | 47117 | 540 | 2679 | 1003.9 | 4 |
“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 | 55% | 37% | 3.3 | 10:20 |
| Feb | 48% | 37% | 4.2 | 11:03 |
| Mar | 36% | 38% | 5.4 | 11:54 |
| Apr | 30% | 45% | 6.1 | 12:54 |
| May | 20% | 37% | 7.0 | 13:43 |
| Jun | 13% | 16% | 8.0 | 14:09 |
| Jul | 12% | 16% | 7.6 | 13:58 |
| Aug | 13% | 15% | 7.1 | 13:16 |
| Sep | 15% | 17% | 6.2 | 12:18 |
| Oct | 24% | 30% | 4.7 | 11:21 |
| Nov | 42% | 36% | 3.5 | 10:32 |
| Dec | 54% | 37% | 3.0 | 10:08 |
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 Nasiriyah is like
The warmest month is July, with an average high of 47 °C117 °F and a low of 31 °C88 °F. The coldest is January, when highs average 18 °C64 °F and lows 5 °C40 °F. Seasons are strongly marked: the warmest month is on average 27.9 °C50.3 °F warmer than the coldest.
It is very dry, with only 100 mm3.9 in of precipitation in an average year. The wettest three-month stretch is November–January, which brings 55% of the annual total. Months with less than 20 mm0.8 in on average: February–December. The wettest month is January (21 mm0.8 in), the driest is July (0 mm0.0 in).
Relative humidity ranges from 12% in July to 55% in January. The clearest skies (lowest average cloud amount, 15%) are typical of August. Average wind speed near the ground ranges from 9 km/h (6 mph) in November to 16 km/h (10 mph) in June. Daylight lasts from about 10.1 hours in December to 14.2 hours in June.
Best time to visit Nasiriyah
Based on these averages, the most comfortable months for sightseeing and outdoor activities are February and March and November and December. Average highs then reach 19 °C66 °F to 27 °C81 °F. Precipitation is 10 mm0.4 in to 17 mm0.7 in per month.
The most challenging month is July, which is hot, with average highs of 47 °C117 °F.
Comfort score: months are ranked by how close they come to an ideal. That means 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 Nasiriyah
- Winter (December–February) — highs 1864 to 21 °C70 °F, lows 540 to 7 °C44 °F, about 17 mm0.7 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 2781 to 40 °C105 °F, lows 1253 to 24 °C76 °F, about 8 mm0.3 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 45114 to 47 °C117 °F, lows 2883 to 31 °C88 °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 2578 to 43 °C110 °F, lows 1254 to 26 °C80 °F, about 8 mm0.3 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water.
How Nasiriyah compares
The nearest larger place is Basrah, about 158 km to the east. Compared with it, Nasiriyah is on average 0.4 °C0.7 °F cooler. It receives 16% more precipitation (100 mm3.9 in vs 86 mm3.4 in). The difference is largest in January (0.7 °C1.3 °F cooler).
World Climates covers 39 places in Iraq. By annual mean temperature, Nasiriyah is the 7th warmest of them. By annual precipitation, it is the 36th wettest. See all of them on the Iraq climate page.
Some places in other countries have a very similar pattern of temperature and rainfall. The closest matches are Khorramshahr (Iran, BWh), Ahvaz (Iran, BWh) and Bandar-e Mahshahr (Iran, BWh).
Nearby places
- Climate in Ash Shaţrah 40 km · 26 °C79 °F · 141 mm5.6 in
- Climate in Qalat Sukkar 91 km · 26 °C78 °F · 199 mm7.8 in
- Climate in As Samawah 97 km · 25 °C77 °F · 106 mm4.2 in
- Climate in Al Madinah 97 km · 26 °C79 °F · 118 mm4.7 in
- Climate in Al Qurnah 112 km · 26 °C79 °F · 118 mm4.7 in
- Climate in Al Amarah 121 km · 26 °C78 °F · 198 mm7.8 in
- Climate in Basrah 158 km · 27 °C80 °F · 86 mm3.4 in
- Climate in Al Diwaniyah 164 km · 25 °C77 °F · 147 mm5.8 in
Frequently asked questions
What is the warmest month in Nasiriyah?
July is the warmest month in Nasiriyah. Its average high is 47 °C (117 °F) and its average low is 31 °C (88 °F).
What is the coldest month in Nasiriyah?
January is the coldest month. Its average high is 18 °C (64 °F) and its average low is 5 °C (40 °F).
When does it rain the most in Nasiriyah?
January is the wettest month with about 21 mm (0.8 in) of precipitation. July is the driest with about 0 mm (0.0 in).
What is the best time to visit Nasiriyah?
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. The gaps are largest 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.