Osa Climate: Weather by Month and Best Time to Visit
Best months for Osa: July, June, August.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | -10°C | -16°C | 39 mm | 11 | – | – | 3.6 |
| February | -8°C | -15°C | 33 mm | 9 | – | – | 3.9 |
| March | -1°C | -9°C | 38 mm | 9 | – | – | 3.8 |
| April | 8°C | -1°C | 39 mm | 8 | – | – | 5.5 |
| May | 17°C | 5°C | 51 mm | 10 | – | – | 6.9 |
| June | 21°C | 11°C | 68 mm | 12 | – | – | 7.4 |
| July | 23°C | 13°C | 63 mm | 11 | – | – | 7.6 |
| August | 20°C | 11°C | 64 mm | 11 | – | – | 7.3 |
| September | 14°C | 6°C | 62 mm | 12 | – | – | 6.3 |
| October | 6°C | 1°C | 64 mm | 13 | – | – | 4.7 |
| November | -3°C | -7°C | 52 mm | 12 | – | – | 3.5 |
| December | -8°C | -13°C | 43 mm | 11 | – | – | 3.6 |