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Weather in Arecibo - 14-day forecast

Detailed weather forecast for Arecibo, Puerto Rico: daytime and night temperature, rain, sunrise and sunset - today and for the next two weeks.
Forecast for the next days in Arecibo
today🌧️ 32°💧 7.5 mm
Sun🌧️ 34°💧 4.4 mm
Mon🌧️ 31°💧 8.7 mm
Tue🌧️ 31°💧 4 mm
Wed🌧️ 31°💧 4.5 mm
Thu🌧️ 31°💧 1.6 mm
Fri🌧️ 31°💧 1.6 mm
Sat🌧️ 32°💧 0.1 mm
Forecast vs 1991-2020 climate normal

How does the current forecast compare with normal?

We compare the coming days with weather usually observed at this time of year.

NASA POWER

Sunday 6 Sept in Arecibo, the forecast high is 34°C. Typical daytime temperatures at this time of year range from 30°C to 31°C, so it will be exceptionally warm. It is warmer than 99% of similar days.

32°Cexceptionally warm
usually 30°C–31°C
warmer than 96% of similar days
night: exceptionally warm rain: more rain than usual wind: exceptionally strong
34°Cexceptionally warm
usually 30°C–31°C
warmer than 99% of similar days
night: warmer than usual rain: typical rainfall wind: stronger than usual
31°Cnear normal
usually 30°C–31°C
night: warmer than usual rain: more rain than usual wind: exceptionally strong
31°Cwarmer than usual
usually 29°C–31°C
warmer than 73% of similar days
night: cooler than usual rain: typical rainfall wind: exceptionally strong
31°Cwarmer than usual
usually 29°C–31°C
warmer than 74% of similar days
night: cooler than usual rain: typical rainfall wind: exceptionally strong
31°Cwarmer than usual
usually 29°C–31°C
warmer than 85% of similar days
night: warmer than usual rain: less rain than usual wind: exceptionally strong
31°Cwarmer than usual
usually 29°C–31°C
warmer than 87% of similar days
night: cooler than usual rain: less rain than usual wind: exceptionally strong

How warm was this week in previous years?

Each bar shows the average daily high during the same 7-day period in each year.

swipe to see more years →
25°30°35° 1981: 30°C1982: 30°C1983: 30°C1984: 30°C1985: 30°C1986: 30°C1987: 30°C1988: 29°C1989: 31°C1990: 31°C1991: 30°C1992: 30°C1993: 30°C1994: 30°C1995: 29°C1996: 29°C1997: 30°C1998: 30°C1999: 29°C2000: 31°C2001: 31°C2002: 31°C2003: 31°C2004: 30°C2005: 30°C2006: 30°C2007: 31°C2008: 29°C2009: 30°C2010: 30°C2011: 30°C2012: 31°C2013: 30°C2014: 29°C2015: 32°C2016: 31°C2017: 30°C2018: 31°C2019: 31°C2020: 31°C2021: 31°C2022: 31°C2023: 32°C2024: 31°C2025: 32°C 2026 forecast: 32°C current forecast 32°C 198119902000201020202026
cooler yearstypical rangewarmer years2026 forecastcurrent forecast

From 1981 to 2025, the 5-11 Sept period averaged 30°C by day. The coolest year was 1996 (29°C) and the warmest was 2023 (32°C). The current forecast averages 32°C - higher than in 96% of historical years.

Historical reference: NASA POWER daily gridded data (MERRA-2), the 1991-2020 normal and a +/- 7-day calendar window. The typical range is the 20th-80th percentile. This is not a city weather-station reading and does not change the current forecast. NASA POWER Daily API.

14-day forecast - Arecibo

Arecibo - 14-day weather forecast infographic

Day-by-day forecast for Arecibo

Saturday5 September 2026
🌧️32°moderate rain
sunrise 06:13 · sunset 18:38 · night 28° · evening 30° · rain 7.54 mm · humidity 74% · wind 8 m/s · clouds 95%
Sunday6 September 2026
🌧️34°moderate rain
sunrise 06:13 · sunset 18:37 · night 27° · evening 30° · rain 4.4 mm · humidity 71% · wind 6 m/s · clouds 75%
Monday7 September 2026
🌧️31°moderate rain
sunrise 06:13 · sunset 18:36 · night 27° · evening 29° · rain 8.66 mm · humidity 72% · wind 8 m/s · clouds 81%
Tuesday8 September 2026
🌧️31°light rain
sunrise 06:13 · sunset 18:35 · night 26° · evening 29° · rain 4.02 mm · humidity 65% · wind 10 m/s · clouds 7%
Wednesday9 September 2026
🌧️31°light rain
sunrise 06:14 · sunset 18:35 · night 26° · evening 30° · rain 4.45 mm · humidity 66% · wind 9 m/s · clouds 23%
Thursday10 September 2026
🌧️31°light rain
sunrise 06:14 · sunset 18:34 · night 27° · evening 31° · rain 1.56 mm · humidity 66% · wind 10 m/s · clouds 37%
Friday11 September 2026
🌧️31°light rain
sunrise 06:14 · sunset 18:33 · night 26° · evening 30° · rain 1.59 mm · humidity 61% · wind 10 m/s · clouds 56%
Saturday12 September 2026
🌧️32°light rain
sunrise 06:14 · sunset 18:32 · night 26° · evening 31° · rain 0.12 mm · humidity 58% · wind 10 m/s · clouds 45%
Sunday13 September 2026
🌧️31°light rain
sunrise 06:14 · sunset 18:31 · night 25° · evening 30° · rain 1.02 mm · humidity 60% · wind 10 m/s · clouds 35%
Monday14 September 2026
🌧️31°moderate rain
sunrise 06:14 · sunset 18:30 · night 26° · evening 27° · rain 18.12 mm · humidity 60% · wind 11 m/s · clouds 5%
Tuesday15 September 2026
🌧️31°moderate rain
sunrise 06:15 · sunset 18:29 · night 26° · evening 28° · rain 11.7 mm · humidity 59% · wind 10 m/s · clouds 10%
Wednesday16 September 2026
🌧️30°moderate rain
sunrise 06:15 · sunset 18:28 · night 26° · evening 29° · rain 7.86 mm · humidity 66% · wind 10 m/s · clouds 100%
Thursday17 September 2026
🌧️31°moderate rain
sunrise 06:15 · sunset 18:28 · night 26° · evening 29° · rain 8.04 mm · humidity 66% · wind 9 m/s · clouds 82%
Friday18 September 2026
🌧️30°light rain
sunrise 06:15 · sunset 18:27 · night 25° · evening 30° · rain 2.88 mm · humidity 65% · wind 5 m/s · clouds 28%
Saturday19 September 2026
🌧️30°moderate rain
sunrise 06:15 · sunset 18:26 · night 26° · evening 31° · rain 5.13 mm · humidity 68% · wind 7 m/s · clouds 97%

UV index in Arecibo - is it safe to sunbathe?

UV INDEX · 16-DAY FORECASTArecibo03681111+7.7UV HIGHtoday, daily maxSPF 30-50, a hat and sunglasses are a must. Betterstay in shade between 11:00 and 15:00.Unprotected fair skin may burn in about 25 min8Sat5.098Sun6.099Mon7.099Tue8.097Wed9.098Thu10.099Fri11.099Sat12.099Sun13.099Mon14.099Tue15.096Wed16.096Thu17.096Fri18.099Sat19.094Sun20.090-2 low3-5 moderate6-7 high8-10 very high11+ extremeworld-prices.com · 2026-09-05
Today the UV index in Arecibo is 8 (high) - unprotected fair skin can burn in about 25 minutes. SPF 30-50, a hat and sunglasses are a must. Better stay in shade between 11:00 and 15:00.

Sea temperature - Arecibo

Water today
29°C
Week avg
30°C
How's the water?
very warm
16-day sea temperature forecast:
5.09 29°C6.09 30°C7.09 30°C8.09 30°C9.09 30°C10.09 30°C11.09 30°C12.09 30°C13.09 30°C
Average sea temperature through the year:
Jan 27°CFeb 27°CMar 27°CApr 27°CMay 29°CJun 29°CJul 29°CAug 30°CSep 30°COct 30°CNov 29°CDec 29°C
Sea-surface temperature from marine models, updated daily. See also: where the sea is warmest right now.
Upcoming public holidays in Puerto Rico: Labour Day — 7 September · Columbus Day — 12 October · Veterans Day — 11 November.

Nearby and related places

YaucoPonceMayagueezCaguasCarolinaSan JuanFajardo

FAQ - Arecibo weather

What is the weather like in Arecibo today?
Today it is about 32° during the day and 28° at night, moderate rain.
How far ahead can I check the forecast for Arecibo?
This page shows a detailed 14-day forecast plus the long-term monthly climate, so you can plan both a short trip and a holiday months ahead.