The temperatures in Castro in August are quite cold with temperatures between 5°C and 10°C, warm clothes are a must.
You can expect rain for roughly half of the month of August in Castro. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Our weather forecast can give you a great sense of what weather to expect in Castro in August 2026.
If you’re planning to visit Castro in the near future, we highly recommend that you review the 14 day weather forecast for Castro before you arrive.
Temperatures
10° / 5°
Rainy Days
13
Snowy Days
0
Dry Days
18
Rainfall
306
mm
Sun Hours
6.5
Hrs
