Average Monthly Sunshine hours in SeaTac (WA)

This graph shows the average number of hours per month that SeaTac receives direct sunlight. The numbers are calculated over a 30-year period to provide a reliable average.

• On average, July is the sunniest month with 312 hours of sunshine.
• December has on average the lowest amount of sunshine with 54 hours.
• On average, the total annual amount of sun is 2180 hours.

Forecast: is it sunny in SeaTac (WA)?

Sat   Nov 23

11°C | 5°C

S 14 km/h

0.8 mm

broken clouds and chance of slight rain

hourly forecast

Sun   Nov 24

8°C | 5°C

SE 11 km/h

21 mm

overcast and heavy rain

hourly forecast

Mon   Nov 25

10°C | 5°C

E 11 km/h

7 mm

broken clouds and rain

hourly forecast

5-Day Forecast 10-Day Forecast