United States · 1991–2020

Best time to visit
Waikapū.

February leads for comfortable weather in Waikapū: typically 27.2°C by day, 17.5°C at night, with 50 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortFebruary

Typical high27.2°C

Typical low17.5°C

Rain in February50 mm

Comfort

February

February · January · April

81climate match

Beach

May

May · June · October

95climate match

Outdoors

February

February · January · April

59climate match

The weakest month is August, scoring 62 against February’s 81 — days average 31.4°C, 7° above the 24°C the score treats as ideal.

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

7927.2° / 17.4°

Feb

8127.2° / 17.5°

Mar

7527.5° / 18.2°

Apr

7728.4° / 19.1°

May

7329.5° / 19.7°

Jun

6830.5° / 21°

Jul

6431° / 21.9°

Aug

6231.4° / 22.3°

Sep

6431.4° / 21.6°

Oct

6730.8° / 21°

Nov

7129.1° / 20.1°

Dec

7427.8° / 18.6°

Monthly climate evidence for Waikapū — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 12 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	27.2°C	17.4°C	61 mm	5.8	24.5°C	10 h 59	79	Strong coverage
February	27.2°C	17.5°C	50 mm	5.7	24.1°C	11 h 26	81	Strong coverage
March	27.5°C	18.2°C	67 mm	7.1	24.1°C	11 h 58	75	Strong coverage
April	28.4°C	19.1°C	34 mm	4.7	24.4°C	12 h 36	77	Strong coverage
May	29.5°C	19.7°C	19 mm	3.1	25.0°C	13 h 07	73	Strong coverage
June	30.5°C	21°C	4 mm	1.4	25.6°C	13 h 23	68	Strong coverage
July	31°C	21.9°C	13 mm	3.3	26.0°C	13 h 17	64	Strong coverage
August	31.4°C	22.3°C	13 mm	3.2	26.5°C	12 h 51	62	Strong coverage
September	31.4°C	21.6°C	11 mm	2.1	26.8°C	12 h 14	64	Strong coverage
October	30.8°C	21°C	21 mm	2.8	26.7°C	11 h 38	67	Strong coverage
November	29.1°C	20.1°C	44 mm	4.9	26.1°C	11 h 07	71	Strong coverage
December	27.8°C	18.6°C	66 mm	6.2	25.2°C	10 h 52	74	Strong coverage

What has changed

Waikapū runs +1.0°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

+1.2

Feb

+0.8

Mar

+0.6

Apr

+1.2

May

+0.8

Jun

+1.0

Jul

+1.1

Aug

+0.8

Sep

+1.0

Oct

+1.1

Nov

+0.9

Dec

+1.0

February daytime highs, 2011–2025. Last recorded: 27.7°C.

Records at KAHULUI AP, 1954–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	32.2°C10 Jan 1959	8.9°C20 Jan 1969	119 mm10 Jan 1980	367 mm1980 · driest 0 mm in 2012	72
February	32.2°C13 Feb 2016	10.0°C22 Feb 2009	121 mm14 Feb 2003	211 mm1972 · driest 2 mm in 2000	72
March	33.3°C10 Mar 2022	10.6°C16 Mar 2005	188 mm13 Mar 2026	537 mm2026 · driest 0 mm in 2008	72
April	32.8°C30 Apr 2013	12.2°C4 Apr 1985	100 mm7 Apr 1989	363 mm1989 · driest 0 mm in 2003	72
May	35.6°C22 May 2019	13.3°C13 May 2012	61 mm5 May 1987	111 mm1987 · driest 0 mm in 1972	73
June	35.0°C6 Jun 2019	14.4°C2 Jun 1985	56 mm29 Jun 1967	64 mm1967 · driest 0 mm in 2021	73
July	36.1°C29 Jul 2019	14.4°C30 Jul 1965	26 mm22 Jul 1989	42 mm1989 · driest 0 mm in 2021	73
August	36.1°C31 Aug 1994	15.6°C15 Aug 2019	37 mm24 Aug 2015	60 mm2018 · driest 0 mm in 2002	72
September	36.1°C16 Sep 2019	15.0°C15 Sep 2009	30 mm23 Sep 1965	50 mm2018 · driest 0 mm in 2024	72
October	35.6°C25 Oct 2020	14.4°C13 Oct 1964	83 mm16 Oct 2006	144 mm1985 · driest 0 mm in 1996	72
November	35.6°C5 Nov 2020	12.8°C6 Nov 2017	139 mm12 Nov 1965	236 mm1965 · driest 0 mm in 2004	72
December	32.2°C13 Dec 1991	11.1°C18 Dec 1983	163 mm20 Dec 2017	259 mm1996 · driest 0 mm in 2011	72

Typical days per month at KAHULUI AP, 1991–2020
Month	Days 25°C+	Days 30°C+	Heavy rain (10 mm+)
January	28	2	2
February	26	1	1
March	29	3	2
April	29	7	<1
May	31	13	<1
June	30	22	0
July	31	27	<1
August	31	29	<1
September	30	28	<1
October	31	24	<1
November	30	10	1
December	30	4	2

How often, not how much — every day in KAHULUI AP’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	78%	22%	7%	24%	25.7–28.4°C
February	78%	21%	6%	21%	25.6–28.1°C
March	78%	22%	6%	24%	26.2–28.4°C
April	83%	18%	4%	14%	26.7–29.4°C
May	91%	10%	2%	5%	27.4–30.3°C
June	95%	5%	<1%	3%	29.0–31.2°C
July	91%	9%	<1%	5%	29.4–31.7°C
August	91%	10%	<1%	5%	29.5–32.2°C
September	93%	8%	<1%	3%	29.9–32.3°C
October	89%	11%	2%	9%	29.2–31.6°C
November	82%	18%	4%	18%	27.9–30.4°C
December	77%	24%	7%	24%	26.4–28.8°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.

1955Each stripe is one year’s mean temperature against the 69-year average. Warmest: 2020. Coolest: 1955.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5854354
NOAA station: USW00022516 · KAHULUI AP
Station distance: 8.3 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 29 usable years
Daylight: Calculated from latitude 20.86°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 12 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 KAHULUI AP is what differs

Kahului→Wailuku→Waihee-Waiehu→Spreckelsville→Paia→Haliimaile→

Or put two places side by side: Waikapū vs Kahului

Best time to visitWaikapū.

February

May

February

The whole year,without the guesswork.

Waikapū runs +1.0°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Waikapū.

The whole year,
without the guesswork.

Waikapū runs +1.0°C
on the 1961–1990 baseline.

Nearby, measured,
and named.