What is the weather like in Oslo vs San Juan in September?

In September, Oslo averages 18°C high / 10°C low with about 93 mm of rain; San Juan averages 32°C high / 26°C low with about 147 mm.

Oslo vs San Juan in September

Oslo is the better pick in September — 74 vs 61 on SeasonMap's comfort score. Oslo is nice, rainy, clean air, while San Juan is sweltering, rainy, clean air.

Oslo vs San Juan — September climate, side by side

	🇳🇴 Oslo	🇵🇷 San Juan
Comfort score	74/100 (B)	61/100 (C)
Feels-like high	16°C	38°C
Avg high / low	18° / 10°	32° / 26°
Rainfall	93 mm	147 mm
Rainy days	10	13
Humidity	82%	83%
Air quality (AQI)	38	29

Monthly climate normals (ERA5 reanalysis). Comfort scores are SeasonMap estimates.

Month by month

Oslo 🇳🇴 Norwaynice, rainy, clean air · best July74
San Juan 🇵🇷 Puerto Ricosweltering, rainy, clean air · best January61

Oslo vs San Juan in September — FAQ

Is September better in Oslo or San Juan?: Oslo is the better pick in September — 74 vs 61 on SeasonMap's comfort score. Oslo is nice, rainy, clean air, while San Juan is sweltering, rainy, clean air.
What is the weather like in Oslo vs San Juan in September?: In September, Oslo averages 18°C high / 10°C low with about 93 mm of rain; San Juan averages 32°C high / 26°C low with about 147 mm.