United States · 1991–2020

Best time to visit
Aptos Hills-Larkin Valley.

September leads for comfortable weather in Aptos Hills-Larkin Valley: typically 24.1°C by day, 11.6°C at night, with 2 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high24.1°C

Typical low11.6°C

Rain in September2 mm

Comfort

September

September · August · July

94climate match

Beach

September

September · August · July

59climate match

Outdoors

May

May · June · July

97climate match

The weakest month is December, scoring 41 against September’s 94 — days reach only 15.9°C, 8° below the 24°C the score treats as ideal, and nights drop to 4.5°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

4516.3° / 4.9°

Feb

4616.7° / 5.6°

Mar

5217.7° / 6.6°

Apr

6718.9° / 7.4°

May

7820.5° / 9.1°

Jun

8622.1° / 10.6°

Jul

8922.3° / 12°

Aug

9122.6° / 12.4°

Sep

9424.1° / 11.6°

Oct

8723° / 9.5°

Nov

6519.2° / 6.6°

Dec

4115.9° / 4.5°

Monthly climate evidence for Aptos Hills-Larkin Valley — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 10 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	16.3°C	4.9°C	93 mm	7.3	12.6°C	9 h 53	45	Good coverage
February	16.7°C	5.6°C	94 mm	8.1	12.6°C	10 h 46	46	Good coverage
March	17.7°C	6.6°C	87 mm	8.2	12.5°C	11 h 51	52	Good coverage
April	18.9°C	7.4°C	37 mm	5	12.0°C	13 h 05	67	Good coverage
May	20.5°C	9.1°C	12 mm	2	12.0°C	14 h 07	78	Good coverage
June	22.1°C	10.6°C	3 mm	0.5	12.6°C	14 h 41	86	Good coverage
July	22.3°C	12°C	1 mm	0.1	13.7°C	14 h 28	89	Good coverage
August	22.6°C	12.4°C	1 mm	0.2	14.4°C	13 h 34	91	Good coverage
September	24.1°C	11.6°C	2 mm	0.7	14.6°C	12 h 22	94	Good coverage
October	23°C	9.5°C	20 mm	2	14.3°C	11 h 11	87	Good coverage
November	19.2°C	6.6°C	52 mm	5.2	13.6°C	10 h 08	65	Good coverage
December	15.9°C	4.5°C	103 mm	7.5	12.9°C	9 h 38	41	Good coverage

Records at WATSONVILLE MUNI AP, 1998–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	28.9°C17 Jan 2014	-5.5°C14 Jan 2007	89 mm23 Jan 2000	339 mm2017 · driest 0 mm in 2015	28
February	29.4°C12 Feb 2022	-2.1°C24 Feb 2018	103 mm13 Feb 2000	282 mm2000 · driest 0 mm in 2020	28
March	33.9°C19 Mar 2026	-0.6°C8 Mar 2002	76 mm5 Mar 2016	286 mm2011 · driest 1 mm in 2026	28
April	36.7°C21 Apr 2009	0.6°C15 Apr 2009	69 mm5 Apr 2020	105 mm2006 · driest 0 mm in 2021	28
May	36.1°C16 May 2008	2.2°C10 May 2022	28 mm3 May 2003	58 mm2019 · driest 0 mm in 2008	28
June	40.6°C20 Jun 2008	5.6°C8 Jun 1999	19 mm4 Jun 2011	34 mm2011 · driest 0 mm in 2010	28
July	36.1°C22 Jul 2006	7.8°C6 Jul 2020	1 mm13 Jul 2022	2 mm2011 · driest 0 mm in 2016	28
August	40.0°C24 Aug 2010	7.8°C5 Aug 2018	3 mm6 Aug 2015	5 mm2011 · driest 0 mm in 2005	28
September	43.3°C6 Sep 2020	6.1°C8 Sep 2002	27 mm18 Sep 2022	48 mm2022 · driest 0 mm in 2012	28
October	38.9°C6 Oct 2024	1.1°C12 Oct 2008	115 mm13 Oct 2009	117 mm2009 · driest 0 mm in 2019	28
November	33.9°C5 Nov 2012	-1.7°C30 Nov 2004	63 mm13 Nov 2025	131 mm2025 · driest 1 mm in 2009	28
December	27.8°C1 Dec 2021	-6.1°C23 Dec 1998	92 mm11 Dec 2014	341 mm2022 · driest 1 mm in 2011	28

Typical days per month at WATSONVILLE MUNI AP, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	<1	0	2	3
February	1	0	1	3
March	2	<1	<1	3
April	2	<1	0	1
May	4	<1	0	<1
June	6	1	0	<1
July	6	<1	0	0
August	6	1	0	0
September	11	4	0	0
October	10	3	0	<1
November	3	<1	<1	2
December	<1	0	3	3

How often, not how much — every day in WATSONVILLE MUNI 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	21%	24%	10%	27%	14.4–18.8°C
February	21%	28%	12%	40%	14.8–19.3°C
March	26%	26%	10%	30%	15.9–20.2°C
April	33%	15%	4%	12%	17.0–20.7°C
May	49%	6%	1%	3%	18.5–22.4°C
June	73%	2%	<1%	0%	20.5–23.4°C
July	82%	<1%	0%	0%	20.8–23.9°C
August	85%	<1%	0%	0%	20.9–24.4°C
September	82%	2%	<1%	<1%	21.6–26.1°C
October	69%	7%	2%	5%	20.5–25.9°C
November	39%	17%	6%	17%	17.5–21.1°C
December	13%	26%	13%	34%	14.2–17.9°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.

1999Each stripe is one year’s mean temperature against the 27-year average. Warmest: 2014. Coolest: 1999.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 7260801
NOAA station: USW00023277 · WATSONVILLE MUNI AP
Station distance: 4.6 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 22 usable years
Daylight: Calculated from latitude 36.96°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 10 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 WATSONVILLE MUNI AP is what differs

Amesti→La Selva Beach→Corralitos→Ellicott→Leonard (historical)→Monterey Vista Mobile Home Park→

Or put two places side by side: Aptos Hills-Larkin Valley vs Amesti

Best time to visitAptos Hills-Larkin Valley.

September

September

May

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Aptos Hills-Larkin Valley.

The whole year,
without the guesswork.

Nearby, measured,
and named.