Temperature
Cool by day, cold at night.
Castro is usually most comfortable in January and February. Typical daytime highs range from 50–69°F across the year. Rain is frequent in many months.

Cool by day, cold at night.
Several rainy days. About 13 wet days this month.
A mix of sunshine and cloud.
In November, afternoons feel about 54° and nights feel near 42°.
Mostly cloudy skies this month.
Calm winds are typical in November.
November late afternoons are around 58°F, easing to about 53°F in early evening.
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% |
|---|---|---|---|---|---|---|
| Jan | 68 | 51 | 2.5 | 10 | 11.5 | 74 |
| Feb | 69 | 51 | 2.3 | 8 | 10.7 | 73 |
| Mar | 65 | 49 | 3.4 | 11 | 9.1 | 79 |
| Apr | 59 | 46 | 4.4 | 13 | 7.2 | 83 |
| May | 55 | 43 | 6.8 | 17 | 5.5 | 88 |
| Jun | 51 | 41 | 7.6 | 19 | 4.7 | 89 |
| Jul | 50 | 40 | 6.9 | 18 | 5.3 | 88 |
| Aug | 52 | 40 | 7.7 | 20 | 6.2 | 86 |
| Sep | 55 | 41 | 5.1 | 16 | 7.8 | 82 |
| Oct | 58 | 44 | 4.9 | 16 | 9.2 | 78 |
| Nov | 61 | 46 | 3.9 | 13 | 10.1 | 77 |
| Dec | 65 | 49 | 3.2 | 13 | 10.9 | 74 |
Similar climates
Want a side-by-side climate view? Compare Castro with Buenos Aires.
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Sunshine: source type is not yet identified at metric level.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Aug 27, 2026
Data & methodology