The best time to visit Iran
The best time to visit Iran for warm, sunny weather is February to May, when its destinations average a Sunshine Score of 76/100 with daytime highs around 24°C / 75°F. June is a quieter shoulder-season alternative with still-reliable sun. Midsummer peaks in July at about 38°C / 100°F — hot for sightseeing, ideal for the coast. The sea is swimmable (21°C+) year-round, warmest in July at 34°C.
Iran by month, averaged across 19 destinations from long-term climate normals — the best stretch is highlighted.
| Month | Sunshine Score | Avg day high | Rain | Sea | For a trip |
|---|---|---|---|---|---|
| January | 48 | 14° / 57°F | 34 mm | 22° | Good |
| February | 58 | 16° / 61°F | 28 mm | 21° | Very good |
| March | 80 | 21° / 70°F | 30 mm | 23° | Excellent |
| April | 88 | 26° / 79°F | 24 mm | 25° | Excellent |
| May | 77 | 32° / 90°F | 11 mm | 28° | Excellent |
| June | 54 | 37° / 99°F | 6 mm | 32° | Good |
| July | 41 | 38° / 100°F | 5 mm | 34° | Good |
| August | 48 | 37° / 99°F | 7 mm | 34° | Good |
| September | 70 | 34° / 93°F | 11 mm | 33° | Excellent |
| October | 85 | 29° / 84°F | 21 mm | 32° | Excellent |
| November | 77 | 21° / 70°F | 38 mm | 28° | Excellent |
| December | 56 | 16° / 61°F | 34 mm | 24° | Very good |
When to go — and when to think twice
Best overall: February to May — Iran's warmest, most reliable stretch (Sunshine Score 76/100, ~24°C / 75°F days). Shoulder season: June — quieter, still sunny. Hottest: July, ~38°C / 100°F. Rain stays light most of the year (~249 mm total).
Where to base yourself for sunshine: Zahedan (3,764 h/yr), Yazd (3,759 h/yr), Kerman (3,716 h/yr). See every Iran destination with a full climate card, or where it's sunny worldwide, month by month.