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Weather & Climate
Mercedes, San José, Costa Rica
Overview
Climate data and monthly weather averages for Mercedes.
Key Metrics
Annual Avg
21.3°C
Summer Avg
21.4°C
Winter Avg
20.8°C
Record High
30.5°C
Record Low
14.1°C
Annual Precipitation
2257.7 mm
Avg Humidity
85%
Summer Humidity
88%
Winter Humidity
81%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 27.8° | 20.6° | 14.3° | 101.4 | 81% | 141 | 13.5 |
| Feb | 29.6° | 21.1° | 14.9° | 59.1 | 77% | 143 | 18.5 |
| Mar | 30.5° | 21.9° | 15.4° | 72.5 | 74% | 164 | 15.4 |
| Apr | 30.3° | 22.3° | 15.7° | 125.4 | 78% | 145 | 13.6 |
| May | 29.6° | 21.9° | 14.9° | 252.7 | 87% | 135 | 15.8 |
| Jun | 27.6° | 21.6° | 17.1° | 240 | 89% | 129 | 14.3 |
| Jul | 27.1° | 21.3° | 16.2° | 266 | 88% | 129 | 13.6 |
| Aug | 27.4° | 21.4° | 16.7° | 226.3 | 88% | 133 | 16.3 |
| Sep | 27.1° | 21.2° | 16.9° | 232.8 | 90% | 134 | 12.8 |
| Oct | 26.8° | 20.9° | 16.4° | 277.4 | 92% | 125 | 15.2 |
| Nov | 26.2° | 20.7° | 15.9° | 254.1 | 90% | 110 | 16.2 |
| Dec | 26.4° | 20.7° | 14.1° | 150 | 85% | 126 | 12.6 |
Frequently Asked Questions
Sources: NASA POWER · Last updated: 2025
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