San Jose
Costa Rica
| Season | Autumn | Winter | Spring | Summer | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Sep | Oct | Nov | Dec | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Year |
| Record high, °C | 30 | 29 | 28 | 30 | 30 | 31 | 32 | 31 | 31 | 33 | 28 | 29 | 33 |
| Average high, °C | 29 | 29 | 28 | 28 | 28 | 28 | 29 | 29 | 30 | 29 | 29 | 29 | 29 |
| Average temperature, °C | 25 | 25 | 24 | 24 | 23 | 23 | 24 | 25 | 25 | 25 | 25 | 25 | 24 |
| Average low, °C | 21 | 21 | 20 | 20 | 19 | 19 | 19 | 20 | 21 | 21 | 21 | 21 | 20 |
| Record low, °C | 13 | 12 | 11 | 9 | 9 | 10 | 10 | 11 | 12 | 13 | 12 | 13 | 9 |
| Rain, days | 16 | 16 | 15 | 14 | 14 | 14 | 14 | 15 | 16 | 16 | 16 | 16 | 180 |
| Fog, days | 8 | 7 | 6 | 3 | 1 | 2 | 8 | 5 | 5 | 6 | 4 | 5 | 60 |
| Thunderstorms, days | 10 | 8 | 3 | 1 | 0 | 0 | 0 | 1 | 5 | 11 | 12 | 12 | 63 |
| Average precipitation, mm. | 376 | 449 | 471 | 452 | 276 | 239 | 215 | 242 | 430 | 444 | 510 | 475 | 4577 |
| Relative humidity, % | 86 | 87 | 80 | 80 | 76 | 72 | 72 | 73 | 81 | 84 | 83 | 84 | 80 |
| Relative humidity morning, % | 95 | 95 | 95 | 95 | 94 | 94 | 94 | 94 | 94 | 95 | 96 | 95 | 95 |
| Relative humidity evening, % | 76 | 78 | 79 | 78 | 75 | 75 | 74 | 73 | 76 | 78 | 79 | 79 | 77 |
| Wind speed, km/h | 8 | 12 | 8 | 8 | 9 | 12 | 12 | 12 | 9 | 8 | 8 | 9 | 10 |
| Day Length, часов | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 13 | 13 | 13 | 13 | 13 | 12 |
| Dew point, °C | 17 | 17 | 16 | 16 | 14 | 14 | 15 | 15 | 17 | 18 | 17 | 17 | 193 |
| Growing degree-day, °C | 452 | 461 | 430 | 423 | 405 | 377 | 432 | 438 | 475 | 456 | 459 | 460 | 5266 |
| Solar radiation, global, Mj/m2 | 16 | 14 | 13 | 13 | 15 | 17 | 18 | 18 | 15 | 14 | 13 | 14 | 15 |