Climate almanac

Basţām

Semnan, Iran · 36.49°, 55.00°

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What is the climate like in Basţām?

The best time to visit Basţām is typically May – October, with trip comfort peaking in August (9.1/10). Basţām is warmest in July, when daily highs average 86°F (30°C), and coolest in January, when lows fall to about 27°F (-3°C). The wettest month is typically March and the driest is August; the year sees roughly 16 in (398 mm) of precipitation.

  • Best time to visitMay – October — comfort peaks in August (9.1/10)
  • Warmest monthJuly — average high 86°F (30°C)
  • Coolest monthJanuary — average low 27°F (-3°C)
  • Wettest monthMarch (2.5 in (63 mm))
  • Driest monthAugust (0.4 in (9 mm))
  • Annual precipitation16 in (398 mm)
  • Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
  • Records fromGorgan, 71 km away (1973-2025)