Juan Santamaria International Airport (SJO) 15 Day Weather Forecast, San Jose Costa Rica
Current weather conditions and 15 day weather forecast for Juan Santamaria International Airport in San Jose, Costa Rica including weather daily high/low temperature, warnings, chance of precipitation, pressure, humidity/wind chill, rain, wind speed, cloud, pressure, and UV index.
Current weather conditions at SJO
| 13 September 2026 Sun 19.6 ° C ( 67.3°F )  Light rain shower |
Feels Like : 21.7 ° C / 71.1°F Humidity : % 94 Pressure : 1011 mb Wind Speed : 5.4 kmph / 3.4 miles from NE 
Visibility : 10 km Precipitation (rainfall) : 0.29 mm Cloud (%) : 100 |
15-day weather forecast for Juan Santamaria International Airport, San Jose, Costa Rica
| Date | Weather forecast | Low temperature | High temperature | Average Temperature | Humidity | Wind | Chance of rain |
|---|---|---|---|---|---|---|---|
| 13 September 2026 Sun |  Patchy rain nearby |
18.8 ° C | 27.2 ° C | 21.1 ° C | % 86 | 7.6 km/h | 84% |
| 14 September 2026 Mon | Light rain shower |
18.3 ° C | 25.2 ° C | 20.9 ° C | % 87 | 7.2 km/h | 87% |
| 15 September 2026 Tue | Light rain shower |
18.7 ° C | 28.3 ° C | 21.7 ° C | % 81 | 5.8 km/h | 85% |
| 16 September 2026 Wed |  Overcast |
17.5 ° C | 27.6 ° C | 20.8 ° C | % 86 | 6.8 km/h | 89% |
| 17 September 2026 Thu | Light rain shower |
17.1 ° C | 28.6 ° C | 21.2 ° C | % 84 | 7.9 km/h | 87% |
| 18 September 2026 Fri | Light rain shower |
18.7 ° C | 25.7 ° C | 21.5 ° C | % 88 | 5 km/h | 89% |
| 19 September 2026 Sat |  Moderate or heavy rain shower |
18.7 ° C | 25.4 ° C | 21.5 ° C | % 89 | 6.5 km/h | 89% |
| 20 September 2026 Sun | Moderate or heavy rain shower |
17.8 ° C | 26.2 ° C | 20.9 ° C | % 91 | 8.6 km/h | 91% |
| 21 September 2026 Mon |  Fog |
18.1 ° C | 24.5 ° C | 20.5 ° C | % 90 | 10.4 km/h | 91% |
| 22 September 2026 Tue | Light rain shower |
18.4 ° C | 21.4 ° C | 19.5 ° C | % 96 | 7.2 km/h | 88% |
| 23 September 2026 Wed | Overcast |
17.8 ° C | 26.2 ° C | 21 ° C | % 85 | 9.4 km/h | 88% |
| 24 September 2026 Thu | Light rain shower |
18.3 ° C | 24.5 ° C | 20.6 ° C | % 90 | 6.5 km/h | 87% |
| 25 September 2026 Fri | Light rain shower |
18.5 ° C | 28.2 ° C | 21.2 ° C | % 87 | 6.5 km/h | 89% |
| 26 September 2026 Sat |  Mist |
18.2 ° C | 25.6 ° C | 21 ° C | % 86 | 7.9 km/h | 83% |
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