| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 19.1° | — | 37.1mm | 4.9 | 87 |
| February | 22° | 9.2° | 12.4mm | 3.4 | 93 |
| March | 28.1° | — | 12.9mm | 3.3 | 89 |
| April | 33.1° | 18.9° | 15.5mm | 3.3 | 69 |
| May | 40.8° | 25.5° | 3.1mm | 1 | 43 |
| June | 45.5° | 28.6° | 3.2mm | 0.1 | 40 |
| July | 47.5° | 29.4° | 0mm | 0 | 40 |
| August | 47.5° | 27.8° | 3mm | 0.2 | 40 |
| September | 43.5° | 24.2° | 0mm | 0 | 40 |
| October | 36.4° | — | 1mm | 0.6 | 61 |
| November | 26.9° | — | 21mm | 3.8 | 92 |
| December | 21.1° | — | 32.1mm | 3.8 | 92 |
January in Khorramshahr averages a daily high of 19.1°C. Expect roughly 4.9 wet days totalling 37.1mm. Comfortable conditions for being outdoors all day.
February in Khorramshahr averages a daily high of 22°C with nights around 9.2°C. Expect roughly 3.4 wet days totalling 12.4mm. Comfortable conditions for being outdoors all day.
March in Khorramshahr averages a daily high of 28.1°C. Expect roughly 3.3 wet days totalling 12.9mm. Comfortable conditions for being outdoors all day.
April in Khorramshahr averages a daily high of 33.1°C with nights around 18.9°C. Expect roughly 3.3 wet days totalling 15.5mm. Generally workable, with some weather to plan around.
May in Khorramshahr averages a daily high of 40.8°C with nights around 25.5°C. Rain is rare — about 1 wet days and 3.1mm across the month. Demanding conditions — pack for it and plan indoor options.
June in Khorramshahr averages a daily high of 45.5°C with nights around 28.6°C. Rain is rare — about 0.1 wet days and 3.2mm across the month. Demanding conditions — pack for it and plan indoor options.
July in Khorramshahr averages a daily high of 47.5°C with nights around 29.4°C. Rain is rare — about 0 wet days and 0mm across the month. Demanding conditions — pack for it and plan indoor options.
August in Khorramshahr averages a daily high of 47.5°C with nights around 27.8°C. Rain is rare — about 0.2 wet days and 3mm across the month. Demanding conditions — pack for it and plan indoor options.
September in Khorramshahr averages a daily high of 43.5°C with nights around 24.2°C. Rain is rare — about 0 wet days and 0mm across the month. Demanding conditions — pack for it and plan indoor options.
October in Khorramshahr averages a daily high of 36.4°C. Rain is rare — about 0.6 wet days and 1mm across the month. Generally workable, with some weather to plan around.
November in Khorramshahr averages a daily high of 26.9°C. Expect roughly 3.8 wet days totalling 21mm. Comfortable conditions for being outdoors all day.
December in Khorramshahr averages a daily high of 21.1°C. Expect roughly 3.8 wet days totalling 32.1mm. 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. Khorramshahr peaks at 93.
Based on 30 years of records, November–March scores highest for comfort in Khorramshahr, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 47.5°C.
January is the wettest, averaging 37.1mm of rain across roughly 4.9 wet days.
January is the coolest month, with average daily highs around 19.1°C.