worldweather32°Cexceptionally warm
usually 29°C–30°C
warmer than 97% of similar days
night: exceptionally warm
rain: typical rainfall
wind: typical
Weather in Guayama - 14-day forecast
Detailed weather forecast for Guayama, Puerto Rico: daytime and night temperature, rain, sunrise and sunset - today and for the next two weeks.
Forecast for the next days in Guayama
today🌧️
32°💧 2 mm
Sun🌧️
32°💧 1.2 mm
Mon🌧️
30°💧 2 mm
Tue🌧️
29°💧 2.6 mm
Wed🌧️
29°💧 8.8 mm
Thu🌧️
29°💧 5.4 mm
Fri🌧️
30°💧 1.7 mm
Sat🌧️
30°💧 2.6 mm
Forecast vs 1991-2020 climate normal
NASA POWERHow does the current forecast compare with normal?
We compare the coming days with weather usually observed at this time of year.
Saturday 5 Sept in Guayama, the forecast high is 32°C. Typical daytime temperatures at this time of year range from 29°C to 30°C, so it will be exceptionally warm. It is warmer than 97% of similar days.
32°Cexceptionally warm
usually 29°C–30°C
warmer than 96% of similar days
night: exceptionally warm
rain: typical rainfall
wind: lighter than usual
30°Cwarmer than usual
usually 29°C–30°C
warmer than 70% of similar days
night: exceptionally warm
rain: typical rainfall
wind: typical
29°Cnear normal
usually 29°C–30°C
night: near normal
rain: typical rainfall
wind: typical
29°Ccooler than usual
usually 29°C–30°C
cooler than 74% of similar days
night: exceptionally warm
rain: more rain than usual
wind: typical
29°Cnear normal
usually 29°C–30°C
night: exceptionally warm
rain: more rain than usual
wind: typical
30°Cwarmer than usual
usually 29°C–30°C
warmer than 80% of similar days
night: exceptionally warm
rain: typical rainfall
wind: typical
How warm was this week in previous years?
Each bar shows the average daily high during the same 7-day period in each year.
cooler yearstypical rangewarmer years2026 forecastcurrent forecast
From 1981 to 2025, the 5-11 Sept period averaged 30°C by day. The coolest year was 1988 (28°C) and the warmest was 2023 (32°C). The current forecast averages 30°C - higher than in 82% 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Historical reference: NASA POWER daily gridded data (MERRA-2), the 1991-2020 normal and a +/- 7-day calendar window.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 - Guayama
Day-by-day forecast for Guayama
Saturday5 September 2026
🌧️32°light rain
Sunday6 September 2026
🌧️32°light rain
Monday7 September 2026
🌧️30°light rain
Tuesday8 September 2026
🌧️29°light rain
Wednesday9 September 2026
🌧️29°moderate rain
Thursday10 September 2026
🌧️29°light rain
Friday11 September 2026
🌧️30°light rain
Saturday12 September 2026
🌧️30°light rain
Sunday13 September 2026
🌧️30°light rain
Monday14 September 2026
🌧️30°light rain
Tuesday15 September 2026
🌧️30°light rain
Wednesday16 September 2026
🌧️29°light rain
Thursday17 September 2026
🌧️29°moderate rain
Friday18 September 2026
🌧️27°moderate rain
Saturday19 September 2026
🌧️29°moderate rain
UV index in Guayama - is it safe to sunbathe?
Today the UV index in Guayama is 8 (very high) - unprotected fair skin can burn in about 25 minutes. SPF 50, long sleeves and shade between 10:00 and 16:00.
Sea temperature - Guayama
Water today
30°C
Week avg
30°C
Waves today
0.5 m
How's the water?
very warm
16-day sea temperature forecast:
Average sea temperature through the year:
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
FAQ - Guayama weather
What is the weather like in Guayama today?
Today it is about 32° during the day and 27° at night, light rain.
How far ahead can I check the forecast for Guayama?
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.