What is the weather like in Reykjavík vs San Juan in January?

In January, Reykjavík averages 3°C high / -2°C low with about 127 mm of rain; San Juan averages 29°C high / 23°C low with about 61 mm.

Reykjavík vs San Juan in January

San Juan is the better pick in January — 77 vs 31 on SeasonMap's comfort score. San Juan is hot, a little rain, clean air, while Reykjavík is freezing, rainy, clean air.

Reykjavík vs San Juan — January climate, side by side

	🇮🇸 Reykjavík	🇵🇷 San Juan
Comfort score	31/100 (F)	77/100 (B)
Feels-like high	-2°C	31°C
Avg high / low	3° / -2°	29° / 23°
Rainfall	127 mm	61 mm
Rainy days	18	8
Humidity	82%	79%
Air quality (AQI)	39	32

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

Month by month

Reykjavík vs San Juan in January — FAQ

Is January better in Reykjavík or San Juan?: San Juan is the better pick in January — 77 vs 31 on SeasonMap's comfort score. San Juan is hot, a little rain, clean air, while Reykjavík is freezing, rainy, clean air.
What is the weather like in Reykjavík vs San Juan in January?: In January, Reykjavík averages 3°C high / -2°C low with about 127 mm of rain; San Juan averages 29°C high / 23°C low with about 61 mm.