Climate averages 1991–2020

Caguas weather
in May.

A hot, wet month: the 6th warmest and the 10th driest of the year.

Long-term climate patterns, not a forecast for a particular trip.

Average high 29.3°C Daytime mean, May

Average low 23.5°C Night-time mean, May

Rainfall 141 mm 22 days with ≥1 mm

Daylight 13 h Sunrise to sunset, per day

May is a hot month in Caguas: daytime highs average 29.3°C and nights cool to about 23.5°C. By daytime temperature it is the 6th warmest of the 12 months.

Expect about 141 mm of rain on roughly 22 days, which makes May a wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 59 min on an average May day.

The nearest other city in this atlas is Carolina (19 km away). In May its highs average 30.0°C, 0.7°C warmer than Caguas, with 112 mm of rain.

Among the 7 cities listed in Puerto Rico, Caguas ranks 6th of 7 for the warmest May highs and 6th of 7 for the driest May (rainfall, lowest first). The mean May high of those 7 cities is 29.9°C; Caguas is 0.6°C cooler than that mean.

From May to June, average highs rise by 0.6°C to 29.9°C, and monthly rainfall falls from 141 mm to 99 mm.

The annual picture

May in context

30-year average

Average highAverage low°C

Monthly rainfall

Average total · mm

Averages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated

Every month, side by side

Caguas climate table

1991–2020

Monthly climate averages for Caguas, 1991–2020
Month	Average highHigh / low	Average low	Rainfall mm/month	Rain days ≥1 mm/day	Daylight hours/dayDaylight h/day
January	27.1°C21.7°C	21.7°C	49	15.7	11.211 h
February	27.5°C21.5°C	21.5°C	39	13.1	11.512 h
March	28.2°C21.6°C	21.6°C	55	14.8	12.012 h
April	28.9°C22.4°C	22.4°C	86	17.7	12.513 h
May, selected	29.3°C23.5°C	23.5°C	141	21.9	13.013 h
June	29.9°C24.4°C	24.4°C	99	20.8	13.213 h
July	30.2°C24.6°C	24.6°C	110	21.7	13.113 h
August	30.3°C24.8°C	24.8°C	127	23.9	12.713 h
September	30.1°C24.6°C	24.6°C	168	25.2	12.312 h
October	29.5°C24.2°C	24.2°C	156	24.9	11.712 h
November	28.4°C23.3°C	23.3°C	124	22.3	11.311 h
December	27.4°C22.4°C	22.4°C	58	16.5	11.111 h

Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.

Compare places

May in nearby cities

Distance from Caguas

Read the numbers correctly

Climate, not a promise.

These patterns help compare months. They cannot tell you the weather on a specific day of your trip.

Sources, method and limits

How these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Caguas) is explained once on the Caguas year overview and on the Sources, method and limits page.