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 August
8-year averages · when to visit
Best months: January–December · August: Good
|
July |
August |
September |
| Average temperature |
→ 20°C |
20°C |
→ 20°C |
| Typical high |
→ 25°C |
25°C |
→ 25°C |
| Typical low |
→ 17°C |
17°C |
▼ 16°C |
| Precipitation |
▲ 300 mm |
413 mm |
▲ 453 mm |
| Wet days |
▲ 23 d |
27 d |
▲ 29 d |
| Humidity |
▲ 82% |
83% |
▲ 88% |
| Sunshine per day |
→ 8.6 h |
8.6 h |
▼ 8.2 h |
| Cloud cover |
▼ 32% |
30% |
▲ 32% |
| Midday UV |
→ 12 |
12 |
→ 12 |
| Daylight |
12:38 |
12:26 |
12:10 |
| Our take |
Good
|
Good
|
Good
|
August temperatures day by day daily mean + smoothed trend · °C
August precipitation day by day mm
August 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