San Juan

Current Weather

20°68°

Overcast

Feels Like: 19°66°

Min: 18°65°

Max: 24°75°

The next few hours will be overcast, with tomorrow reaching 22°C and dropping to 17°C. The coming days will be light rain throughout the day and possible thunderstorms in the afternoon.

Hourly Forecast
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Air Quality
19
Good

Air quality is satisfactory, and air pollution poses little or no risk.

GoodHazardous
Daylight Hours

05:29

Sunrise

17:18

Sunset

11 hours 48 minutes of sunlight today
Moon

06:07

Moonrise

Daily Forecast

Sunday

18°65°
24°75°

Today

18°64°
22°72°

Tuesday

17°63°
23°74°

Wednesday

17°63°
24°75°

Thursday

17°63°
23°74°

Friday

18°65°
23°74°

Saturday

17°63°
24°75°

Sunday

18°64°
22°72°

Monday

17°63°
21°69°

Tuesday

18°64°
22°71°
UV Index
No protection needed
0Low
LowExtreme
Humidity
98%Very Humid
LowHigh
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Weather in San Juan tomorrow, October 12, 2026

San Juan looks damp on October 12, 2026, so plan for wet spells during the day. Early travel and outdoor time should assume rain can arrive quickly. Early hours look the most unsettled, with rain probability near 100% by 10:00. The thickest cloud arrives around 00:00, reaching about 95%.San Juan looks damp on October 12, 2026, so plan for wet spells during the day. Early travel and outdoor time should assume rain can arrive quickly. Early hours look the most unsettled, with rain probability near 100% by 10:00. The thickest cloud arrives around 00:00, reaching about 95%.

Temperatures climb from an overnight low near 18°C toward a daytime high of about 22°C. Relative humidity sits between 86% and 100%, reaching its peak around 18:00. A lighter breeze peaks around 12:00 near 8 km/h.Temperatures climb from an overnight low near 64°F toward a daytime high of about 72°F. Relative humidity sits between 86% and 100%, reaching its peak around 18:00. A lighter breeze peaks around 12:00 near 5 mph.

The second half of the day still looks unsettled, with rain probability around 100% by 12:00. Dense cloud near 98% at 18:00 keeps the feel grey. Expect visibility near 13.6 km, with poorer spells close to 5 km. The sun rises at 05:29 and sets at 17:17, for a total of 11 hours 47 minutes of sunlight today.The second half of the day still looks unsettled, with rain probability around 100% by 12:00. Dense cloud near 98% at 18:00 keeps the feel grey. Expect visibility near 8.4 mi, with poorer spells close to 3.1 mi. The sun rises at 05:29 and sets at 17:17, for a total of 11 hours 47 minutes of sunlight today.

In short, treat October 12, 2026 in San Juan as a damp day: pack covers, watch the wetter hours, and expect a high near 22°C.In short, treat October 12, 2026 in San Juan as a damp day: pack covers, watch the wetter hours, and expect a high near 72°F.

Frequently asked questions about weather in San Juan

How warm does it get in San Juan?

The warmest month in San Juan is March, with average high temperatures of 30°C. The average temperature during this period is around 25°C.The warmest month in San Juan is March, with average high temperatures of 85°F. The average temperature during this period is around 76°F.

How cold does it get in San Juan?

The coldest month in San Juan is January, with average low temperatures of 20°C. The average temperature during this period is around 24°C.The coldest month in San Juan is January, with average low temperatures of 68°F. The average temperature during this period is around 75°F.

What is the wettest time of year in San Juan?

The wettest month in San Juan is October, with an average of 562 mm of precipitation.The wettest month in San Juan is October, with an average of 22.1 in of precipitation.

What is the driest time of year in San Juan?

The driest month in San Juan is February, with an average of 14 mm of precipitation.The driest month in San Juan is February, with an average of 0.6 in of precipitation.

View full climate insights for San Juan →