Temperature
Warm by day, warm at night.
Humid air is the main limitation.

Warm by day, warm at night.
It rains on most days, including some longer spells. About 28 wet days, more than in most months.
Cloudier spells limit sunshine.
Very humid air is a major factor this month.
In August, afternoons feel about 88° and nights feel near 80°.
Overcast skies this month.
Calm winds are typical in August.
August late afternoons are around 79°F, easing to about 76°F in early evening.
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% |
|---|---|---|---|---|---|---|
| Jan | 80 | 69 | 4.5 | 16 | 10.5 | 87 |
| Feb | 81 | 69 | 2.1 | 9 | 11.1 | 84 |
| Mar | 83 | 69 | 1.2 | 7 | 11.4 | 81 |
| Apr | 86 | 71 | 2.1 | 10 | 10.9 | 80 |
| May | 85 | 73 | 9.9 | 24 | 9.0 | 86 |
| Jun | 84 | 73 | 12.6 | 29 | 8.0 | 90 |
| Jul | 83 | 72 | 10.4 | 28 | 8.0 | 90 |
| Aug | 84 | 72 | 9.9 | 28 | 8.3 | 90 |
| Sep | 84 | 72 | 11.3 | 29 | 8.1 | 90 |
| Oct | 83 | 72 | 12.8 | 30 | 7.6 | 91 |
| Nov | 81 | 71 | 11.8 | 27 | 8.1 | 90 |
| Dec | 80 | 70 | 7.8 | 22 | 9.9 | 89 |
Similar climates
Want a side-by-side climate view? Compare La Fortuna with Perez Zeledon.
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 22, 2026
Data & methodology