United States · 1991–2020

Best time to visit
He‘eia.

January leads for comfortable weather in He‘eia: typically 26.5°C by day, 19.7°C at night, with 115 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJanuary

Typical high26.5°C

Typical low19.7°C

Rain in January115 mm

Comfort

January

January · April · February

65climate match

Beach

June

June · May · April

79climate match

Outdoors

April

April · January · February

41climate match

The weakest month is September, scoring 46 against January’s 65 — days average 29.9°C, 6° above the 24°C the score treats as ideal, and nights stay at 23.4°C.

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

6526.5° / 19.7°

Feb

6226.4° / 19.8°

Mar

5426.6° / 20.1°

Apr

6527.2° / 20.9°

May

5928.3° / 21.7°

Jun

5728.8° / 22.7°

Jul

5229.4° / 23.3°

Aug

4930° / 23.6°

Sep

4629.9° / 23.4°

Oct

4829.3° / 23°

Nov

4727.8° / 21.8°

Dec

5626.6° / 20.6°

Monthly climate evidence for He‘eia — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 9 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	26.5°C	19.7°C	115 mm	11.5	24.4°C	10 h 57	65	Good coverage
February	26.4°C	19.8°C	140 mm	10.3	24.0°C	11 h 25	62	Good coverage
March	26.6°C	20.1°C	167 mm	13.3	24.0°C	11 h 58	54	Good coverage
April	27.2°C	20.9°C	78 mm	12	24.4°C	12 h 37	65	Good coverage
May	28.3°C	21.7°C	86 mm	11.5	25.0°C	13 h 09	59	Good coverage
June	28.8°C	22.7°C	63 mm	13.4	25.7°C	13 h 26	57	Good coverage
July	29.4°C	23.3°C	64 mm	15.1	26.0°C	13 h 19	52	Good coverage
August	30°C	23.6°C	81 mm	13.9	26.5°C	12 h 52	49	Good coverage
September	29.9°C	23.4°C	94 mm	15	26.8°C	12 h 14	46	Good coverage
October	29.3°C	23°C	115 mm	13.4	26.7°C	11 h 37	48	Good coverage
November	27.8°C	21.8°C	154 mm	15.4	26.0°C	11 h 05	47	Good coverage
December	26.6°C	20.6°C	143 mm	14.1	25.1°C	10 h 50	56	Good coverage

Records at KANEOHE 838.1, 1997–2018
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	32.8°C20 Jan 2001	13.9°C5 Jan 2017	132 mm13 Jan 2011	327 mm2004 · driest 16 mm in 2001	21
February	32.2°C12 Feb 1998	15.6°C9 Feb 2016	225 mm19 Feb 2018	477 mm2018 · driest 10 mm in 2000	21
March	31.7°C16 Mar 2018	13.9°C8 Mar 2017	166 mm3 Mar 2006	671 mm2006 · driest 6 mm in 2008	21
April	33.3°C11 Apr 2002	15.6°C2 Apr 2013	108 mm21 Apr 2009	239 mm2017 · driest 29 mm in 2005	20
May	32.2°C16 May 2008	16.1°C1 May 2017	125 mm7 May 2002	179 mm2002 · driest 23 mm in 2012	19
June	32.8°C11 Jun 1999	18.3°C5 Jun 2011	113 mm4 Jun 2011	279 mm2011 · driest 21 mm in 2006	20
July	33.3°C26 Jul 2016	18.3°C26 Jul 2002	37 mm30 Jul 2002	92 mm2002 · driest 17 mm in 2006	20
August	35.6°C12 Aug 1998	20.6°C16 Aug 2010	84 mm4 Aug 2004	226 mm2016 · driest 22 mm in 2012	21
September	33.9°C25 Sep 2003	17.2°C30 Sep 2014	149 mm24 Sep 2005	263 mm2005 · driest 27 mm in 2002	21
October	33.9°C10 Oct 2006	18.3°C19 Oct 2014	143 mm5 Oct 2009	255 mm2005 · driest 22 mm in 2012	21
November	32.8°C18 Nov 1997	15.0°C12 Nov 2016	199 mm30 Nov 2003	284 mm2006 · driest 36 mm in 1999	21
December	31.1°C30 Dec 2005	15.0°C31 Dec 2014	126 mm20 Dec 2010	458 mm2010 · driest 30 mm in 2002	21

Typical days per month at KANEOHE 838.1, 1991–2020
Month	Days 25°C+	Days 30°C+	Heavy rain (10 mm+)
January	26	1	3
February	24	<1	3
March	25	1	4
April	27	1	2
May	30	4	2
June	29	6	<1
July	31	12	1
August	30	18	1
September	29	17	1
October	30	10	2
November	29	3	3
December	28	<1	3

How often, not how much — every day in KANEOHE 838.1’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	64%	42%	12%	49%	25.3–27.2°C
February	64%	39%	10%	51%	25.3–27.3°C
March	57%	43%	11%	56%	25.4–27.8°C
April	60%	42%	8%	55%	26.2–28.1°C
May	62%	40%	7%	54%	27.4–29.3°C
June	58%	42%	3%	60%	27.6–29.7°C
July	53%	45%	4%	67%	28.4–30.1°C
August	57%	46%	5%	65%	29.0–30.8°C
September	50%	45%	6%	63%	29.1–30.5°C
October	57%	46%	8%	62%	28.6–30.0°C
November	49%	52%	11%	70%	27.2–28.5°C
December	55%	47%	12%	63%	25.8–27.4°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.

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5855847
NOAA station: USC00513117 · KANEOHE 838.1
Station distance: 1.7 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 19 usable years
Daylight: Calculated from latitude 21.43°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 9 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 KANEOHE 838.1 is what differs

Kaneohe→Pū‘ōhala Village→Kea‘alu→Kokokahi→Mahinui→

Or put two places side by side: He‘eia vs Kaneohe

Best time to visitHe‘eia.