Climate almanac

Saint Helena

California, US · 38.51°, -122.47°

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What is the climate like in Saint Helena?

The best time to visit Saint Helena is typically May – October, with trip comfort peaking in July (9.5/10). Saint Helena is warmest in August, when daily highs average 89°F (32°C), and coolest in December, when lows fall to about 41°F (5°C). The wettest month is typically January and the driest is July; the year sees roughly 28 in of precipitation.

  • Best time to visitMay – October — comfort peaks in July (9.5/10)
  • Warmest monthAugust — average high 89°F (32°C)
  • Coolest monthDecember — average low 41°F (5°C)
  • Wettest monthJanuary (6.1 in)
  • Driest monthJuly (0.0 in)
  • Annual precipitation28 in