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Weather · Puerto Rico

San Juan Weekend Weather

  1. TodayOctober 1829° 25°
  2. TomorrowOctober 1929° 25°
  3. TueOctober 2029° 25°
  4. WedOctober 2130° 24°
  5. ThuOctober 2230° 25°
  6. FriOctober 2331° 25°
  7. SatOctober 2432° 26°
  8. SunOctober 2532° 26°
  9. MonOctober 2632° 25°
  10. TueOctober 2730° 25°
  11. WedOctober 2830° 26°
  12. ThuOctober 2930° 26°
  13. FriOctober 3030° 24°
  14. SatOctober 3130° 24°

Sunday in San Juan: 29°/25°, light drizzle.

Sunday, October 18

San Juan · Sunday, October 18 2026

29°25°

Light drizzle

High 29°, low 25°

Chance of rain
100%
0.7 mm
Wind
18 km/h
southeast
UV index
8
High
Sunrise
06:19
Sunset 17:59
Day length
11 h 41 min
Moon
First quarter
51% illuminated

Updated: · Source: Open-Meteo

Forecast for San Juan on Sunday, October 18, 2026: light drizzle, with a high of 29°C and a low of 25°C. The chance of rain is 100%, with 0.7 mm of precipitation expected in total. Wind from the southeast at up to 18 km/h. Sunrise is at 06:19 and sunset at 17:59; day length 11 h 41 min. Temperatures are close to the 7-day average. The best time to be outdoors looks like 08:00–21:00. Rain is most likely between 12:00 and 19:00.

What to wear and what to watch out for

  • Take an umbrella or a raincoat with you.
  • Mild weather: light clothing is enough.
  • High UV index (8): sunscreen, a hat and sunglasses are recommended.

Sunday, October 18: hour by hour

  1. 06:0025° 
  2. 07:0025° 
  3. 08:0026° 
  4. 09:0027°9%
  5. 10:0028°23%
  6. 11:0029°39%
  7. 12:0029°59%
  8. 13:0028°80%
  9. 14:0029°96%
  10. 15:0029°100%
  11. 16:0029°100%
  12. 17:0029°98%
  13. 18:0028°74%
  14. 19:0027°40%
  15. 20:0026°14%
  16. 21:0026°3%
  17. 22:0026°1%
  18. 23:0026° 

Weather nearby on October 18

Frequently asked questions

Will it rain in San Juan on Sunday, October 18, 2026?
Yes, the chance of rain is 100%, with 0.7 mm of rain expected in total.

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