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Jamaica · 1991–2020

Best time to visit
Old Harbour Bay.

January leads for comfortable weather in Old Harbour Bay: typically 31.3°C by day, 22.4°C at night, with 21 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJanuary

Typical high31.3°C

Typical low22.4°C

Rain in January21 mm

Comfort

January

January · February · March

63climate match

Beach

February

February · January · March

90climate match

Outdoors

January

January · February · March

44climate match

The weakest month is October, scoring 28 against January’s 63 — days average 32.6°C, 9° above the 24°C the score treats as ideal, and 184 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

6331.3° / 22.4°

Feb

6331.1° / 22.4°

Mar

6131.2° / 22.8°

Apr

5831.8° / 23.8°

May

3932.2° / 24.6°

Jun

4633° / 25.5°

Jul

4433.5° / 25.6°

Aug

3933.5° / 25.5°

Sep

3333.2° / 25.3°

Oct

2832.6° / 24.8°

Nov

4532.2° / 24°

Dec

5831.7° / 23.1°

Monthly climate evidence for Old Harbour Bay — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 5 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	31.3°C	22.4°C	21 mm	2.7	27.2°C	11 h 10	63	Good coverage
February	31.1°C	22.4°C	29 mm	2.7	27.0°C	11 h 32	63	Good coverage
March	31.2°C	22.8°C	40 mm	3.4	27.1°C	11 h 59	61	Good coverage
April	31.8°C	23.8°C	25 mm	2.9	27.7°C	12 h 31	58	Good coverage
May	32.2°C	24.6°C	133 mm	6.2	28.2°C	12 h 58	39	Good coverage
June	33°C	25.5°C	65 mm	4.1	28.4°C	13 h 12	46	Good coverage
July	33.5°C	25.6°C	65 mm	4.4	28.7°C	13 h 06	44	Good coverage
August	33.5°C	25.5°C	90 mm	6.4	29.1°C	12 h 44	39	Good coverage
September	33.2°C	25.3°C	142 mm	6.8	29.4°C	12 h 13	33	Good coverage
October	32.6°C	24.8°C	184 mm	8.1	29.3°C	11 h 42	28	Good coverage
November	32.2°C	24°C	99 mm	5.4	28.8°C	11 h 16	45	Good coverage
December	31.7°C	23.1°C	45 mm	3.9	28.0°C	11 h 04	58	Good coverage

What has changed

Old Harbour Bay runs +0.5°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

+0.7

Feb

+0.6

Mar

+0.5

Apr

+0.5

May

+0.3

Jun

+0.2

Jul

—

Aug

+0.5

Sep

+0.8

Oct

+0.4

Nov

+0.4

Dec

+0.5

January daytime highs, 2011–2025. Last recorded: 32.5°C.

Records at NORMAN MANLEY INTL, 1973–2025
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	35.1°C14 Jan 1998	17.8°C23 Jan 2023	51 mm31 Jan 1994	63 mm1994 · driest 0 mm in 2017	49
February	34.8°C25 Feb 2009	17.4°C8 Feb 2024	191 mm3 Feb 1979	191 mm1979 · driest 0 mm in 2012	51
March	35.1°C23 Mar 2007	18.0°C14 Mar 1974	180 mm1 Mar 1975	237 mm1994 · driest 0 mm in 1973	53
April	35.7°C25 Apr 1985	19.2°C18 Apr 2010	282 mm21 Apr 1982	340 mm1982 · driest 0 mm in 1973	50
May	35.0°C19 May 1998	20.0°C19 May 1979	239 mm24 May 2003	327 mm2003 · driest 0 mm in 2012	49
June	36.9°C1 Jun 1999	21.0°C13 Jun 1977	256 mm28 Jun 1985	312 mm2005 · driest 0 mm in 2015	50
July	37.1°C11 Jul 1992	20.6°C11 Jul 2013	303 mm8 Jul 2005	496 mm2005 · driest 0 mm in 1977	51
August	36.9°C4 Aug 2017	19.9°C2 Aug 1990	392 mm6 Aug 1980	587 mm1980 · driest 0 mm in 2002	51
September	35.8°C8 Sep 1987	20.0°C17 Sep 1975	396 mm12 Sep 2004	581 mm2002 · driest 1 mm in 2021	49
October	35.4°C3 Oct 2001	19.0°C24 Oct 1978	302 mm21 Oct 1993	678 mm2005 · driest 1 mm in 2012	51
November	37.1°C11 Nov 1997	19.0°C15 Nov 1976	392 mm24 Nov 1977	392 mm1977 · driest 0 mm in 2009	51
December	35.0°C14 Dec 1978	18.0°C26 Dec 1975	279 mm21 Dec 1980	281 mm1980 · driest 0 mm in 2022	49

Typical days per month at NORMAN MANLEY INTL, 1991–2020
Month	Days 25°C+	Days 30°C+	Heavy rain (10 mm+)
January	27	25	<1
February	24	22	<1
March	26	25	<1
April	26	26	<1
May	27	26	2
June	25	25	1
July	27	27	1
August	26	26	1
September	25	25	2
October	26	25	3
November	26	26	1
December	27	26	<1

How often, not how much — every day in NORMAN MANLEY INTL’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	93%	8%	2%	<1%	30.3–32.1°C
February	90%	10%	2%	<1%	30.2–31.6°C
March	90%	10%	3%	6%	30.4–31.7°C
April	89%	10%	3%	5%	30.9–32.3°C
May	83%	18%	8%	16%	31.3–32.9°C
June	87%	15%	6%	18%	32.2–33.5°C
July	87%	13%	4%	11%	32.8–34.0°C
August	81%	20%	6%	20%	32.5–34.0°C
September	77%	23%	10%	29%	32.2–33.6°C
October	74%	26%	11%	33%	31.8–33.2°C
November	81%	20%	7%	18%	31.4–32.9°C
December	89%	12%	3%	10%	31.0–32.3°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.

1980Each stripe is one year’s mean temperature against the 30-year average. Warmest: 2015. Coolest: 1985.2023

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 3489225
NOAA station: JMM00078397 · NORMAN MANLEY INTL
Station distance: 32.8 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 19 usable years
Daylight: Calculated from latitude 17.91°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 5 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 NORMAN MANLEY INTL is what differs

Kingston→New Kingston→Spanish Town→Portmore→May Pen→Old Harbour→

Or put two places side by side: Old Harbour Bay vs Kingston

Best time to visitOld Harbour Bay.

January

February

January

The whole year,without the guesswork.

Old Harbour Bay runs +0.5°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Old Harbour Bay.

The whole year,
without the guesswork.

Old Harbour Bay runs +0.5°C
on the 1961–1990 baseline.

Nearby, measured,
and named.