Costa Rica climate by month
8-year averages · when to visit
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|
| San José |
25° |
26° |
27° |
27° |
26° |
24° |
25° |
25° |
25° |
24° |
24° |
24° |
| Liberia (Guanacaste) |
32° |
33° |
35° |
35° |
33° |
30° |
31° |
31° |
30° |
29° |
30° |
31° |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|
| Liberia (Guanacaste) |
28° |
28° |
29° |
29° |
31° |
30° |
29° |
30° |
30° |
29° |
28° |
28° |
Figures are averaged over 8 years of ERA5 reanalysis; sea temps come from ocean reanalysis, and UV is derived from solar elevation.
San José climate in December
8-year averages · when to visit
Best months: January–December · December: Good
|
November |
December |
January |
| Average temperature |
▲ 19°C |
20°C |
→ 20°C |
| Typical high |
→ 24°C |
24°C |
▲ 25°C |
| Typical low |
→ 16°C |
16°C |
→ 16°C |
| Precipitation |
▼ 348 mm |
78 mm |
▼ 40 mm |
| Wet days |
▼ 24 d |
11 d |
▼ 7 d |
| Humidity |
▼ 85% |
74% |
▼ 70% |
| Sunshine per day |
▲ 8.2 h |
10.1 h |
▲ 10.7 h |
| Cloud cover |
▼ 29% |
12% |
▼ 8% |
| Midday UV |
→ 9 |
9 |
→ 9 |
| Daylight |
11:40 |
11:33 |
11:37 |
| Our take |
Good
|
Good
|
Perfect
|
December temperatures day by day daily mean + smoothed trend · °C
December precipitation day by day mm
December UV day by day clear-sky midday value
Figures are averaged over 8 years of ERA5 reanalysis; sea temps come from ocean reanalysis, and UV is derived from solar elevation.
More destinations in North America & Caribbean
Costa Rica · 13 weather points · Climate reference: San José (9.93°N, 84.08°W) · America/Costa_Rica