See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
25°
Drizzle and Humid
Feels Like: 24°
Min: 24°
Max: 32°
The next few hours will be drizzle and humid, with today reaching 32°C and dropping to 24°C. The coming days will be light rain throughout the day and possible thunderstorms until night.
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
05:47
Sunrise
17:45
Sunset
Moon
Waxing Gibbous
17:09
Moonrise
04:43
Moonset
Daily Forecast
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Sunday
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View stargazing scoreWeather in Arenal today, September 25, 2026
Arenal looks damp on September 25, 2026, so plan for wet spells during the day. Early travel and outdoor time should assume rain can arrive quickly. Wetter spells lean into the morning, when rain odds reach about 88% near 00:00. Skies look heaviest around 01:00, with cover close to 100%.
Expect highs of 32°C and cooler readings close to 24°C. Moisture in the air spans 66%-99%, with the highest values around 00:00. Expect gentle winds, highest near 16:00 at 3.2 km/h.
Expect the wet theme to continue later, as rain odds reach 92% near 23:00. Cloud amounts hold near 87% around 23:00. Expect visibility near 13.5 km, with poorer spells close to 3.8 km. Sunrise is at 05:47 and sunset at 17:45, giving 11 hours 57 minutes of sunlight today.
Taken together, Arenal looks wet enough on September 25, 2026 that flexible outdoor plans work best, with temperatures peaking near 32°C.
Frequently asked questions about weather in Arenal
How warm does it get in Arenal?
The warmest month in Arenal is February, with average high temperatures of 36°C. The average temperature during this period is around 30°C.
How cold does it get in Arenal?
The coldest month in Arenal is October, with average low temperatures of 24°C. The average temperature during this period is around 27°C.
What is the wettest time of year in Arenal?
The wettest month in Arenal is May, with an average of 278mm of precipitation.
What is the driest time of year in Arenal?
The driest month in Arenal is February, with an average of 20mm of precipitation.
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