United States · 1991–2020

Best time to visit
Kea‘au.

January leads for comfortable weather in Kea‘au: typically 24.3°C by day, 16°C at night, with 257 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJanuary

Typical high24.3°C

Typical low16°C

Rain in January257 mm

Comfort

January

January · June · May

56climate match

Beach

June

June · September · July

36climate match

Outdoors

January

January · June · May

25climate match

The weakest month is August, scoring 22 against January’s 56 — 342 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

5624.3° / 16°

Feb

4224.2° / 16°

Mar

3124° / 16.6°

Apr

3924.6° / 17.2°

May

4525.4° / 17.7°

Jun

4925.9° / 18.3°

Jul

3626.4° / 19°

Aug

2226.6° / 19.3°

Sep

3826.9° / 18.8°

Oct

2626.4° / 18.6°

Nov

2225.2° / 17.8°

Dec

2424.4° / 17°

Monthly climate evidence for Kea‘au — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 17 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	24.3°C	16°C	257 mm	14.5	24.4°C	11 h 04	56	Good coverage
February	24.2°C	16°C	350 mm	15.9	24.1°C	11 h 28	42	Good coverage
March	24°C	16.6°C	391 mm	20.7	24.0°C	11 h 59	31	Good coverage
April	24.6°C	17.2°C	305 mm	21.7	24.3°C	12 h 34	39	Good coverage
May	25.4°C	17.7°C	245 mm	20.6	24.9°C	13 h 03	45	Good coverage
June	25.9°C	18.3°C	188 mm	22.1	25.4°C	13 h 18	49	Good coverage
July	26.4°C	19°C	260 mm	22.2	25.8°C	13 h 12	36	Good coverage
August	26.6°C	19.3°C	342 mm	24	26.3°C	12 h 48	22	Good coverage
September	26.9°C	18.8°C	249 mm	20.3	26.5°C	12 h 14	38	Good coverage
October	26.4°C	18.6°C	343 mm	21.2	26.4°C	11 h 40	26	Good coverage
November	25.2°C	17.8°C	410 mm	20.8	25.9°C	11 h 11	22	Good coverage
December	24.4°C	17°C	433 mm	20.5	25.0°C	10 h 57	24	Good coverage

Records at HILO 5 S, 2005–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	29.9°C16 Jan 2024	11.6°C28 Jan 2019	181 mm24 Jan 2017	688 mm2020 · driest 23 mm in 2022	21
February	30.8°C19 Feb 2015	11.0°C8 Feb 2020	451 mm2 Feb 2008	1231 mm2008 · driest 47 mm in 2025	21
March	30.1°C20 Mar 2026	12.5°C14 Mar 2009	307 mm7 Mar 2009	983 mm2006 · driest 93 mm in 2017	20
April	29.4°C29 Apr 2017	12.6°C12 Apr 2021	138 mm7 Apr 2026	485 mm2015 · driest 58 mm in 2025	20
May	29.6°C30 May 2021	14.2°C4 May 2006	133 mm6 May 2006	714 mm2006 · driest 87 mm in 2009	20
June	29.1°C21 Jun 2019	14.5°C15 Jun 2021	88 mm28 Jun 2026	370 mm2016 · driest 103 mm in 2017	20
July	30.6°C26 Jul 2020	14.8°C13 Jul 2010	104 mm23 Jul 2016	482 mm2014 · driest 76 mm in 2025	21
August	31.0°C27 Aug 2006	15.6°C23 Aug 2008	332 mm22 Aug 2018	1243 mm2018 · driest 38 mm in 2025	20
September	31.3°C2 Sep 2015	14.8°C29 Sep 2010	188 mm23 Sep 2020	772 mm2015 · driest 85 mm in 2025	20
October	30.0°C20 Oct 2022	14.6°C21 Oct 2021	151 mm8 Oct 2018	791 mm2016 · driest 23 mm in 2023	21
November	29.7°C15 Nov 2019	13.8°C20 Nov 2017	288 mm4 Nov 2024	842 mm2015 · driest 158 mm in 2012	21
December	29.4°C3 Dec 2012	12.1°C16 Dec 2017	341 mm26 Dec 2008	830 mm2008 · driest 74 mm in 2024	21

Typical days per month at HILO 5 S, 1991–2020
Month	Days 25°C+	Heavy rain (10 mm+)
January	11	6
February	10	7
March	10	10
April	14	9
May	20	7
June	23	6
July	26	8
August	28	7
September	28	7
October	26	9
November	18	10
December	12	9

How often, not how much — every day in HILO 5 S’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	57%	43%	19%	52%	23.7–25.5°C
February	44%	56%	27%	72%	22.9–25.6°C
March	32%	68%	31%	85%	23.2–25.4°C
April	32%	68%	29%	86%	23.5–25.7°C
May	32%	68%	22%	88%	24.5–26.3°C
June	30%	70%	20%	88%	25.4–26.5°C
July	31%	69%	23%	93%	25.7–27.1°C
August	28%	72%	22%	91%	25.9–27.4°C
September	34%	66%	21%	88%	26.0–27.8°C
October	37%	63%	28%	80%	25.6–27.4°C
November	34%	66%	32%	82%	24.5–25.9°C
December	37%	63%	27%	79%	23.9–25.6°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 5848891
NOAA station: USW00021515 · HILO 5 S
Station distance: 5.4 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 15 usable years
Daylight: Calculated from latitude 19.62°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 17 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 HILO 5 S is what differs

Hawaiian Paradise Park→Hawaiian Beaches→Orchidlands Estates→Nanawale Estates→Kurtistown→Kapoho→

Or put two places side by side: Kea‘au vs Hawaiian Paradise Park

Best time to visitKea‘au.

January

June

January

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Kea‘au.

The whole year,
without the guesswork.

Nearby, measured,
and named.