Climate averages 1991–2020

Arecibo weather
in March.

A hot, moderately wet month: the 8th warmest and the 4th driest of the year.

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

Average high 29.6°C Daytime mean, March

Average low 21.4°C Night-time mean, March

Rainfall 59 mm 10 days with ≥1 mm

Daylight 12 h Sunrise to sunset, per day

March is a hot month in Arecibo: daytime highs average 29.6°C and nights cool to about 21.4°C. By daytime temperature it is the 8th warmest of the 12 months.

Expect about 59 mm of rain on roughly 10 days, which makes March a moderately wet month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 02 min on an average March day.

The nearest other city in this atlas is Ponce (52 km away). In March its highs average 28.7°C, 0.9°C cooler than Arecibo, with 36 mm of rain.

Among the 7 cities listed in Puerto Rico, Arecibo ranks 1st of 7 for the warmest March highs and 7th of 7 for the driest March (rainfall, lowest first). The mean March high of those 7 cities is 29.0°C; Arecibo is 0.6°C warmer than that mean.

From March to April, average highs rise by 0.3°C to 29.9°C, and monthly rainfall rises from 59 mm to 107 mm.

The annual picture

March 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

Arecibo climate table

1991–2020

Monthly climate averages for Arecibo, 1991–2020
Month	Average highHigh / low	Average low	Rainfall mm/month	Rain days ≥1 mm/day	Daylight hours/dayDaylight h/day
January	28.3°C21.5°C	21.5°C	41	9.5	11.211 h
February	29.0°C21.3°C	21.3°C	37	8.2	11.512 h
March, selected	29.6°C21.4°C	21.4°C	59	9.9	12.012 h
April	29.9°C22.2°C	22.2°C	107	13.7	12.613 h
May	30.4°C23.3°C	23.3°C	165	18.3	13.013 h
June	31.5°C24.3°C	24.3°C	92	13.8	13.213 h
July	31.7°C24.6°C	24.6°C	79	14.8	13.113 h
August	31.7°C24.7°C	24.7°C	101	19.6	12.813 h
September	31.2°C24.4°C	24.4°C	154	22.3	12.312 h
October	30.4°C24.0°C	24.0°C	138	21.3	11.712 h
November	28.9°C23.1°C	23.1°C	113	17.4	11.311 h
December	28.3°C22.1°C	22.1°C	48	11.4	11.011 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

March in nearby cities

Distance from Arecibo

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 Arecibo) is explained once on the Arecibo year overview and on the Sources, method and limits page.