Guerneville Weather in January

During January, Guerneville experiences moderate daytime temperatures of 15°C (59°F) and cooler nights around 3°C (37°F). January sits within the rainy season, and part of the winter season, so expect regular and often heavy rainfall.

Rainfall in Guerneville in January

Guerneville is in the rainy season in January, with rain on around 11 days and an average of 171 mm (6.7 in). Rain during the rainy season here tends to be intense rather than just persistent drizzle. Expect significant downpours.

Temperature in Guerneville in January

If you're visiting Guerneville in January, expect highs of 15°C (59°F) and overnight lows around 3°C (37°F). The month of January belongs to the winter season. Temperatures can feel cooler in the morning and evening, so layering is often the best approach. Nights fall to 3°C (37°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.

Sunshine in Guerneville in January

The city usually sees around 190 hours of sunlight, indicating many sunny days despite it being the rainy season.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. April, May, June, July, August, September and October typically offer the best weather for Guerneville.