San Juan

Current Weather

19°66°

Overcast

Feels Like: 18°65°

Min: 18°64°

Max: 23°74°

The next few hours will be overcast, with tomorrow reaching 23°C and dropping to 18°C. The coming days will be light rain

Hourly Forecast
19°66°19°66°19°66°19°66°19°66°19°65°19°65°18°65°18°65°18°65°18°65°20°68°22°71°23°74°23°73°23°73°22°72°22°71°21°71°21°70°21°69°20°68°20°67°19°67°
14%
14%
20%
20%
20%
18%
18%
18%
14%
14%
14%
36%
36%
36%
98%
98%
98%
100%
100%
100%
96%
96%
96%
14%
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
18
Good

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

GoodHazardous
Daylight Hours

05:27

Sunrise

17:16

Sunset

11 hours 48 minutes of sunlight today
Moon

06:05

Moonrise

Daily Forecast

Sunday

18°64°
23°74°

Today

18°65°
23°74°

Tuesday

17°63°
25°77°

Wednesday

16°62°
24°76°

Thursday

16°62°
24°75°

Friday

18°64°
24°76°

Saturday

17°63°
24°75°

Sunday

18°65°
22°72°

Monday

19°66°
21°70°

Tuesday

19°65°
23°74°
UV Index
No protection needed
0Low
LowExtreme
Humidity
98%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

San Juan starts October 12, 2026 looking damp, with rain in the forecast and wetter spells likely at times. Waterproof kit is the safer call for early plans. Morning plans should assume damp conditions, as rain chances climb toward 98% around 10:00. Cloud cover is also at its densest near 00:00 at roughly 98%.San Juan starts October 12, 2026 looking damp, with rain in the forecast and wetter spells likely at times. Waterproof kit is the safer call for early plans. Morning plans should assume damp conditions, as rain chances climb toward 98% around 10:00. Cloud cover is also at its densest near 00:00 at roughly 98%.

Expect highs of 23°C and cooler readings close to 18°C. The air stays humid, with relative humidity between 81% and 99% and the peak around 18:00. Expect gentle winds, highest near 03:00 at 6 km/h.Expect highs of 74°F and cooler readings close to 65°F. The air stays humid, with relative humidity between 81% and 99% and the peak around 18:00. Expect gentle winds, highest near 03:00 at 3 mph.

Expect the wet theme to continue later, as rain odds reach 100% near 13:00. Cloud amounts hold near 96% around 17:00. Visibility stays generally good near 12.3 km on average, though it can drop toward 2 km in thicker cloud or showers. The sun rises at 05:27 and sets at 17:15, for a total of 11 hours 48 minutes of sunlight today.Expect the wet theme to continue later, as rain odds reach 100% near 13:00. Cloud amounts hold near 96% around 17:00. Visibility stays generally good near 7.6 mi on average, though it can drop toward 1.2 mi in thicker cloud or showers. The sun rises at 05:27 and sets at 17:15, for a total of 11 hours 48 minutes of sunlight today.

Overall, San Juan on October 12, 2026 suits indoor plans or waterproof kit, especially while rain chances stay near 100% and the high sits around 23°C.Overall, San Juan on October 12, 2026 suits indoor plans or waterproof kit, especially while rain chances stay near 100% and the high sits around 74°F.

Frequently asked questions about weather in San Juan

How warm does it get in San Juan?

The warmest month in San Juan is May, with average high temperatures of 23°C. The average temperature during this period is around 19°C.The warmest month in San Juan is May, with average high temperatures of 74°F. The average temperature during this period is around 67°F.

How cold does it get in San Juan?

The coldest month in San Juan is February, with average low temperatures of 14°C. The average temperature during this period is around 18°C.The coldest month in San Juan is February, with average low temperatures of 58°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 October, with an average of 513 mm of precipitation.The wettest month in San Juan is October, with an average of 20.2 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 52 mm of precipitation.The driest month in San Juan is March, with an average of 2.1 in of precipitation.

View full climate insights for San Juan →