San Juan

Current Weather

19°66°

Overcast

Feels Like: 19°66°

Min: 16°61°

Max: 24°75°

The next few hours will be mostly cloudy, with tomorrow reaching 26°C and dropping to 17°C. The coming days will be light rain throughout the day.

Hourly Forecast
19°66°19°66°19°66°19°66°19°65°18°65°18°64°17°63°17°63°17°63°17°63°19°66°21°69°22°72°24°75°25°77°26°80°26°78°25°76°24°75°22°72°21°69°19°66°19°66°
44%
44%
8%
8%
8%
18%
18%
18%
52%
52%
52%
94%
94%
94%
94%
94%
94%
50%
8pm
9pm
10pm
11pm
12am
1am
2am
3am
4am
5am
6am
7am
8am
9am
10am
11am
12pm
1pm
2pm
3pm
4pm
5pm
6pm
7pm
Today
Tomorrow

Want a closer look at the weather?

Premium adds minute-by-minute rain timing, yesterday comparisons, and more detail across Airpult.

Get Premium
Air Quality
25
Good

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

GoodHazardous
Daylight Hours

05:48

Sunrise

17:31

Sunset

11 hours 43 minutes of sunlight today
Moon

06:28

Moonrise

Daily Forecast

Sunday

16°61°
24°75°

Today

17°63°
26°80°

Tuesday

17°62°
26°78°

Wednesday

16°61°
27°80°

Thursday

17°62°
26°79°

Friday

18°64°
27°80°

Saturday

17°63°
25°77°

Sunday

16°61°
23°73°

Monday

16°61°
28°82°

Tuesday

15°60°
27°80°
UV Index
No protection needed
0Low
LowExtreme
Humidity
100%Very Humid
LowHigh
Looking at the night sky?

See moon phases, eclipses, and seasons for this year.

View astronomy
Current stargazing conditions?

See sky darkness, moon phase, and the best viewing window for San Juan.

View stargazing score

Weather in San Juan tomorrow, October 12, 2026

Rain features in San Juan on October 12, 2026, so keep waterproofs handy through the day. The damp theme is strongest where shower chances rise. The morning carries the wetter risk, with rain chances near 52% and the highest odds around 10:00. Cloud is also thick early on, peaking near 96% around 05:00.Rain features in San Juan on October 12, 2026, so keep waterproofs handy through the day. The damp theme is strongest where shower chances rise. The morning carries the wetter risk, with rain chances near 52% and the highest odds around 10:00. Cloud is also thick early on, peaking near 96% around 05:00.

The temperature range runs from about 17°C up to 26°C. Moisture in the air spans 57%-100%, with the highest values around 02:00. A lighter breeze peaks around 15:00 near 12 km/h.The temperature range runs from about 63°F up to 80°F. Moisture in the air spans 57%-100%, with the highest values around 02:00. A lighter breeze peaks around 15:00 near 7 mph.

Through the afternoon wet weather remains a factor, with rain chances near 94% around 13:00. Cloud also stays substantial, close to 91% near 19:00. Visibility stays generally good near 8.2 km on average, though it can drop toward 0.2 km in thicker cloud or showers. Daylight runs from 05:48 to 17:30, lasting 11 hours 42 minutes of sunlight today.Through the afternoon wet weather remains a factor, with rain chances near 94% around 13:00. Cloud also stays substantial, close to 91% near 19:00. Visibility stays generally good near 5.1 mi on average, though it can drop toward 0.1 mi in thicker cloud or showers. Daylight runs from 05:48 to 17:30, lasting 11 hours 42 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 26°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 80°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 28°C. The average temperature during this period is around 21°C.The warmest month in San Juan is April, with average high temperatures of 82°F. The average temperature during this period is around 71°F.

How cold does it get in San Juan?

The coldest month in San Juan is January, with average low temperatures of 14°C. The average temperature during this period is around 18°C.The coldest month in San Juan is January, with average low temperatures of 56°F. The average temperature during this period is around 64°F.

What is the wettest time of year in San Juan?

The wettest month in San Juan is June, with an average of 351 mm of precipitation.The wettest month in San Juan is June, with an average of 13.8 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 18 mm of precipitation.The driest month in San Juan is February, with an average of 0.7 in of precipitation.

View full climate insights for San Juan →