| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 26.4° | 9.3° | — | — | 94 |
| February | 29.7° | 11.9° | 0mm | 0 | 89 |
| March | 32.3° | 15.6° | — | — | 73 |
| April | 34.8° | 18.9° | — | — | 63 |
| May | 37.8° | 21.6° | 0mm | 0 | 57 |
| June | 39.7° | 23.1° | 4.1mm | 1 | 47 |
| July | 40° | 25.7° | 0mm | 0 | 48 |
| August | 39.8° | 24.8° | — | — | 43 |
| September | 37.6° | 21.2° | 0mm | 0 | 58 |
| October | 32.9° | 16.1° | 0mm | 0 | 76 |
| November | 29.1° | 12.7° | 0mm | 0 | 92 |
| December | 26.6° | 9.5° | 0mm | 0 | 100 |
January in Najrān averages a daily high of 26.4°C with nights around 9.3°C. Comfortable conditions for being outdoors all day.
February in Najrān averages a daily high of 29.7°C with nights around 11.9°C. Rain is rare — about 0 wet days and 0mm across the month. Comfortable conditions for being outdoors all day.
March in Najrān averages a daily high of 32.3°C with nights around 15.6°C. Generally workable, with some weather to plan around.
April in Najrān averages a daily high of 34.8°C with nights around 18.9°C. Generally workable, with some weather to plan around.
May in Najrān averages a daily high of 37.8°C with nights around 21.6°C. Rain is rare — about 0 wet days and 0mm across the month. Generally workable, with some weather to plan around.
June in Najrān averages a daily high of 39.7°C with nights around 23.1°C. Rain is rare — about 1 wet days and 4.1mm across the month. Demanding conditions — pack for it and plan indoor options.
July in Najrān averages a daily high of 40°C with nights around 25.7°C. Rain is rare — about 0 wet days and 0mm across the month. Demanding conditions — pack for it and plan indoor options.
August in Najrān averages a daily high of 39.8°C with nights around 24.8°C. Demanding conditions — pack for it and plan indoor options.
September in Najrān averages a daily high of 37.6°C with nights around 21.2°C. Rain is rare — about 0 wet days and 0mm across the month. Generally workable, with some weather to plan around.
October in Najrān averages a daily high of 32.9°C with nights around 16.1°C. Rain is rare — about 0 wet days and 0mm across the month. Comfortable conditions for being outdoors all day.
November in Najrān averages a daily high of 29.1°C with nights around 12.7°C. Rain is rare — about 0 wet days and 0mm across the month. Comfortable conditions for being outdoors all day.
December in Najrān averages a daily high of 26.6°C with nights around 9.5°C. Rain is rare — about 0 wet days and 0mm across the month. Comfortable conditions for being outdoors all day.
Each month scores out of 100. It starts at 100 and loses points for daytime highs outside a 20–27°C band, for wet days, and for nights below 2°C. Nothing else is weighted in — no crowd data, no prices, no opinion. Najrān peaks at 100.
Based on 30 years of records, November–January scores highest for comfort in Najrān, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 40°C.
June is the wettest, averaging 4.1mm of rain across roughly 1 wet days.
January is the coolest month, with average daily highs around 26.4°C.