Weather in San José in september
Climate normals based on 10 years of historical data for San José, Costa Rica.
Average high
29°C
Average low
24°C
Rainfall
376 mm
30 rainy days
Sunshine
0.6h/day
Vochtigheid
82%
How Hot Is San José in september?
September brings typical readings of 29°C by day and 24°C by night to San José.
Sunshine Hours in september
San José sees little sun in September — only 0.6h a day on average, despite daylight from 5:30 am to 5:40 pm.
Does It Rain In San José In september?
Heaviest rainfall of the year hits San José: 376mm across 30 days.
Is San José Humid In september?
San José is sticky and humid throughout September: 82% humidity makes the heat feel relentless.
Wind In San José In september
Breezes around 15 kph in San José this September — comfortable for outdoor activity.
Cloud Cover In San José In september
Persistent overcast defines San José's September: 80% cloud cover on average.
Cities With Similar Weather In september
Weather in San José, month by month
| Month | High / Low | Regen | |
|---|---|---|---|
| Weer in januari | 28°C / 22°C | 106mm | Details → |
| Weer in februari | 29°C / 22°C | 66mm | Details → |
| Weer in maart | 30°C / 23°C | 69mm | Details → |
| Weer in april | 31°C / 24°C | 89mm | Details → |
| Weer in mei | 30°C / 25°C | 347mm | Details → |
| Weer in juni | 29°C / 25°C | 447mm | Details → |
| Weer in juli | 28°C / 24°C | 398mm | Details → |
| Weer in augustus | 29°C / 24°C | 388mm | Details → |
| Weer in september | 29°C / 24°C | 376mm | |
| Weer in oktober | 28°C / 24°C | 465mm | Details → |
| Weer in november | 28°C / 24°C | 371mm | Details → |
| Weer in december | 28°C / 23°C | 182mm | Details → |