San Juan

Current Weather

27°81°

Mostly Cloudy

Feels Like: 31°87°

Min: 23°73°

Max: 29°84°

The next few hours will be mostly cloudy, with today reaching 29°C and dropping to 21°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
25
Good

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

GoodHazardous
Daylight Hours

05:34

Sunrise

17:19

Sunset

11 hours 45 minutes of sunlight today
Moon

07:04

Moonrise

18:05

Moonset

Daily Forecast

Today

23°73°
29°84°

Tuesday

21°70°
30°86°

Wednesday

22°71°
29°85°

Thursday

21°70°
29°84°

Friday

22°72°
30°86°

Saturday

22°72°
28°83°

Sunday

22°72°
28°83°

Monday

22°72°
28°82°

Tuesday

22°72°
27°80°

Wednesday

22°72°
29°84°
UV Index
Seek shade during midday
6High
LowExtreme
Humidity
74%Humid
LowHigh
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Weather in San Juan today, 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. Morning plans should assume damp conditions, as rain chances climb toward 26% around 10:00. Cloud cover is also at its densest near 11:00 at roughly 79%.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. Morning plans should assume damp conditions, as rain chances climb toward 26% around 10:00. Cloud cover is also at its densest near 11:00 at roughly 79%.

The temperature range runs from about 23°C up to 29°C. The air stays humid, with relative humidity between 70% and 97% and the peak around 23:00. Expect gentle winds, highest near 09:00 at 17 km/h.The temperature range runs from about 73°F up to 84°F. The air stays humid, with relative humidity between 70% and 97% and the peak around 23:00. Expect gentle winds, highest near 09:00 at 11 mph.

Expect the wet theme to continue later, as rain odds reach 92% near 13:00. Cloud amounts hold near 83% around 23:00. Visibility stays generally good near 14.7 km on average, though it can drop toward 4.3 km in thicker cloud or showers. Daylight runs from 05:34 to 17:19, lasting 11 hours 45 minutes of sunlight today.Expect the wet theme to continue later, as rain odds reach 92% near 13:00. Cloud amounts hold near 83% around 23:00. Visibility stays generally good near 9.1 mi on average, though it can drop toward 2.7 mi in thicker cloud or showers. Daylight runs from 05:34 to 17:19, lasting 11 hours 45 minutes of sunlight today.

The practical takeaway for San Juan on October 12, 2026 is simple: plan for rain, keep layers handy, and work around a high of about 29°C.The practical takeaway for San Juan on October 12, 2026 is simple: plan for rain, keep layers handy, and work around a high of about 84°F.

Frequently asked questions about weather in San Juan

How warm does it get in San Juan?

The warmest month in San Juan is April, with average high temperatures of 33°C. The average temperature during this period is around 28°C.The warmest month in San Juan is April, with average high temperatures of 91°F. The average temperature during this period is around 82°F.

How cold does it get in San Juan?

The coldest month in San Juan is January, with average low temperatures of 22°C. The average temperature during this period is around 25°C.The coldest month in San Juan is January, with average low temperatures of 72°F. The average temperature during this period is around 78°F.

What is the wettest time of year in San Juan?

The wettest month in San Juan is October, with an average of 317 mm of precipitation.The wettest month in San Juan is October, with an average of 12.5 in of precipitation.

What is the driest time of year in San Juan?

The driest month in San Juan is March, with an average of 11 mm of precipitation.The driest month in San Juan is March, with an average of 0.4 in of precipitation.

View full climate insights for San Juan →