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29°
Clear
Feels Like: 32°
Min: 27°
Max: 30°
The next few hours will be mostly clear, with tomorrow reaching 30°C and dropping to 27°C. The coming days will be drizzle
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
06:17
Sunrise
18:13
Sunset
Moon
Waxing Gibbous
17:02
Moonrise
04:15
Moonset
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View stargazing scoreWeather in San Juan tomorrow, September 25, 2026
San Juan sees a largely clear day on September 25, 2026, interrupted by cloudier skies around 14:00. Plan for bright conditions either side of that cloudier interval. Expect a brighter morning, with limited cloud around 13% by 11:00. Conditions start on a settled note.
The day peaks near 30°C and cools toward 27°C. Relative humidity sits between 67% and 89%, reaching its peak around 05:00. Winds stay light, near 6.0 km/h by 17:00, so the day feels still more than breezy.
Later hours favour clearer intervals, as cloud stays near 21% around 14:00. The afternoon is the better half for outdoor time. Expect visibility around 16.1 km. Expect sunrise at 06:17, sunset at 18:12, and 11 hours 55 minutes of sunlight today overall.
The practical takeaway for San Juan is a bright September 25, 2026, ideal for outdoor errands before temperatures ease from about 30°C.
Frequently asked questions about weather in San Juan
How warm does it get in San Juan?
The warmest month in San Juan is August, with average high temperatures of 30°C. The average temperature during this period is around 28°C.
How cold does it get in San Juan?
The coldest month in San Juan is February, with average low temperatures of 23°C. The average temperature during this period is around 25°C.
What is the wettest time of year in San Juan?
The wettest month in San Juan is September, with an average of 166mm of precipitation.
What is the driest time of year in San Juan?
The driest month in San Juan is January, with an average of 40mm of precipitation.
