Puerto Rico · 1991–2020

Best time to visit
El Negro.

February leads for comfortable weather in El Negro: typically 29.1°C by day, 18.5°C at night, with 63 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortFebruary

Typical high29.1°C

Typical low18.5°C

Rain in February63 mm

Comfort

February

February · March · January

66climate match

Beach

February

February · March · January

80climate match

Outdoors

February

February · March · January

43climate match

The weakest month is September, scoring 24 against February’s 66 — days average 32.2°C, 8° above the 24°C the score treats as ideal, and 218 mm of rain falls.

Month by month

The whole year,
without the guesswork.

The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.

Jan

6328.8° / 18.5°

Feb

6629.1° / 18.5°

Mar

6429.5° / 18.9°

Apr

5130.4° / 20°

May

3730.9° / 21.8°

Jun

3831.7° / 22.7°

Jul

3032° / 22.6°

Aug

2932.3° / 22.6°

Sep

2432.2° / 22.5°

Oct

3131.6° / 22°

Nov

3430.3° / 20.9°

Dec

5529.2° / 19.4°

Monthly climate evidence for El Negro — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 18 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	28.8°C	18.5°C	77 mm	12.9	26.7°C	11 h 09	63	Strong coverage
February	29.1°C	18.5°C	63 mm	10.7	26.4°C	11 h 32	66	Strong coverage
March	29.5°C	18.9°C	72 mm	9.1	26.4°C	11 h 59	64	Strong coverage
April	30.4°C	20°C	121 mm	10.5	26.9°C	12 h 32	51	Strong coverage
May	30.9°C	21.8°C	164 mm	13.7	27.6°C	12 h 58	37	Strong coverage
June	31.7°C	22.7°C	133 mm	12.6	28.2°C	13 h 12	38	Strong coverage
July	32°C	22.6°C	179 mm	14.2	28.3°C	13 h 07	30	Strong coverage
August	32.3°C	22.6°C	184 mm	13.5	28.7°C	12 h 44	29	Strong coverage
September	32.2°C	22.5°C	218 mm	13.8	29.1°C	12 h 13	24	Strong coverage
October	31.6°C	22°C	190 mm	14.2	29.0°C	11 h 42	31	Strong coverage
November	30.3°C	20.9°C	195 mm	16.3	28.4°C	11 h 16	34	Strong coverage
December	29.2°C	19.4°C	106 mm	14.2	27.5°C	11 h 03	55	Strong coverage

What has changed

El Negro runs +0.3°C
on the 1961–1990 baseline.

Each bar compares the 2011–2025 daytime average for that month against the same month in 1961–1990, measured at the same station. Months where the older record is too thin to compare are left blank.

Jan

+0.2

Feb

+0.2

Mar

+0.1

Apr

+0.2

May

+0.2

Jun

+0.6

Jul

+0.6

Aug

+0.5

Sep

+0.8

Oct

+0.5

Nov

0.0

Dec

+0.1

February daytime highs, 2011–2025. Last recorded: 29.0°C.

Records at JUNCOS 1 SE, 1931–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	35.6°C23 Jan 1951	10.0°C16 Jan 1980	97 mm16 Jan 1969	222 mm1969 · driest 12 mm in 1938	90
February	35.0°C5 Feb 1951	10.0°C4 Feb 1949	95 mm3 Feb 1956	216 mm1995 · driest 4 mm in 1937	89
March	34.4°C22 Mar 1981	10.0°C8 Mar 1979	107 mm23 Mar 2009	229 mm2009 · driest 1 mm in 2005	90
April	35.6°C6 Apr 2024	10.0°C24 Apr 1946	166 mm25 Apr 1943	580 mm2003 · driest 8 mm in 1967	91
May	36.1°C24 May 1939	10.0°C17 May 1950	157 mm18 May 1985	454 mm1969 · driest 21 mm in 1974	91
June	35.6°C27 Jun 1955	14.4°C20 Jun 1934	141 mm4 Jun 2006	473 mm1970 · driest 8 mm in 2014	87
July	37.8°C16 Jul 1954	13.9°C25 Jul 1936	156 mm3 Jul 2022	373 mm2020 · driest 25 mm in 2026	91
August	36.7°C9 Aug 1953	14.4°C7 Aug 1933	313 mm24 Aug 2011	902 mm2011 · driest 49 mm in 1987	89
September	37.2°C8 Sep 1954	13.3°C21 Sep 1981	384 mm19 Sep 2022	739 mm2008 · driest 16 mm in 1971	87
October	36.1°C29 Oct 1954	12.8°C13 Oct 1944	277 mm9 Oct 1970	697 mm1970 · driest 34 mm in 1937	87
November	35.6°C2 Nov 1981	10.6°C22 Nov 1944	312 mm27 Nov 1987	639 mm1987 · driest 18 mm in 1943	85
December	36.7°C26 Dec 1947	5.6°C18 Dec 1991	168 mm10 Dec 1975	336 mm1975 · driest 12 mm in 1989	87

Typical days per month at JUNCOS 1 SE, 1991–2020
Month	Days 25°C+	Days 30°C+	Heavy rain (10 mm+)
January	31	6	2
February	28	9	2
March	31	16	2
April	30	22	3
May	31	25	5
June	30	28	4
July	31	29	5
August	31	30	5
September	30	28	6
October	30	28	5
November	30	21	5
December	31	12	3

The best month has moved. On the 1961–1990 numbers the strongest month here was February (scoring 78); on 2011–2025 it is January (73). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in JUNCOS 1 SE’s record sorted by what it was actually like, rather than averaged
Month	Warm & dry days	Wet days	Washouts	Week with 3+ wet days	Daytime mean has ranged
January	63%	37%	5%	49%	27.9–31.1°C
February	66%	34%	6%	41%	28.1–31.0°C
March	73%	27%	6%	31%	28.6–31.2°C
April	68%	32%	10%	43%	29.5–32.1°C
May	57%	43%	16%	58%	29.9–32.2°C
June	57%	43%	14%	60%	30.7–32.5°C
July	55%	44%	15%	62%	31.2–33.1°C
August	55%	45%	17%	65%	31.3–32.9°C
September	53%	47%	19%	66%	31.2–33.3°C
October	52%	48%	19%	68%	30.6–32.5°C
November	52%	48%	15%	64%	29.5–31.8°C
December	57%	43%	9%	59%	28.3–31.0°C

A warm and dry day reaches 20°C with under 1 mm of rain; a wet day gets 1 mm or more; a washout gets 10 mm or more. The week column is the share of seven-day stretches in that month, across the station’s whole daily record, that contained three or more wet days — the odds a week-long trip is rained on repeatedly, counted rather than modelled. The last column is the 10th to 90th percentile of that month’s daytime average across individual years: a narrow band means the average is what you will get, a wide one means the average is a midpoint between years that felt quite different.

1936Each stripe is one year’s mean temperature against the 64-year average. Warmest: 2015. Coolest: 1936.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4564214
NOAA station: RQC00665064 · JUNCOS 1 SE
Station distance: 21.9 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 27 usable years
Daylight: Calculated from latitude 18.04°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 18 km from the place centre. A sheltered bay can run warmer than the open sea it is measured from.
Important limit: Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.

These places read the same station, so their numbers are identical — distance from JUNCOS 1 SE is what differs

Humacao→San Lorenzo→Juncos→Yabucoa→Las Piedras→Campo Rico→

Or put two places side by side: El Negro vs Humacao

Best time to visitEl Negro.

February

February

February

The whole year,without the guesswork.

El Negro runs +0.3°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
El Negro.

The whole year,
without the guesswork.

El Negro runs +0.3°C
on the 1961–1990 baseline.

Nearby, measured,
and named.