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U.S. Virgin Islands · 1991–2020

Best time to visit
Altona.

March leads for comfortable weather in Altona: typically 29.2°C by day, 22.9°C at night, with 46 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortMarch

Typical high29.2°C

Typical low22.9°C

Rain in March46 mm

Comfort

March

March · February · January

64climate match

Beach

March

March · February · January

88climate match

Outdoors

March

March · February · January

43climate match

The weakest month is October, scoring 33 against March’s 64 — days average 31.3°C, 7° above the 24°C the score treats as ideal, and nights stay at 25.4°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

6029° / 22.7°

Feb

6229.1° / 22.7°

Mar

6429.2° / 22.9°

Apr

5730° / 23.9°

May

4930.7° / 25°

Jun

4831.7° / 25.9°

Jul

4032.1° / 26°

Aug

3632.2° / 26.1°

Sep

3431.8° / 26°

Oct

3331.3° / 25.4°

Nov

3530.2° / 24.4°

Dec

5229.5° / 23.5°

Monthly climate evidence for Altona — 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	29°C	22.7°C	59 mm	10.1	26.4°C	11 h 08	60	Strong coverage
February	29.1°C	22.7°C	50 mm	8.7	26.1°C	11 h 31	62	Strong coverage
March	29.2°C	22.9°C	46 mm	6.8	26.1°C	11 h 59	64	Strong coverage
April	30°C	23.9°C	58 mm	7	26.7°C	12 h 32	57	Strong coverage
May	30.7°C	25°C	79 mm	8.3	27.4°C	12 h 59	49	Strong coverage
June	31.7°C	25.9°C	60 mm	6.9	28.0°C	13 h 13	48	Strong coverage
July	32.1°C	26°C	81 mm	10.6	28.2°C	13 h 08	40	Strong coverage
August	32.2°C	26.1°C	103 mm	11.2	28.6°C	12 h 45	36	Strong coverage
September	31.8°C	26°C	125 mm	11.5	28.9°C	12 h 13	34	Strong coverage
October	31.3°C	25.4°C	141 mm	13	28.9°C	11 h 42	33	Strong coverage
November	30.2°C	24.4°C	160 mm	14.4	28.3°C	11 h 15	35	Strong coverage
December	29.5°C	23.5°C	78 mm	12.1	27.2°C	11 h 02	52	Strong coverage

What has changed

Altona runs -0.4°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

-0.7

Mar

-1.0

Apr

-0.7

May

-0.4

Jun

0.0

Jul

0.0

Aug

-0.1

Sep

-0.3

Oct

-0.2

Nov

-0.4

Dec

-0.2

March daytime highs, 2011–2025. Last recorded: 30.2°C.

Records at CYRIL E KING AP, 1953–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	33.9°C3 Jan 1996	17.2°C29 Jan 1996	83 mm6 Jan 1992	123 mm2006 · driest 0 mm in 1996	62
February	33.9°C9 Feb 1993	16.7°C29 Feb 1972	222 mm14 Feb 2015	339 mm2015 · driest 0 mm in 2024	64
March	35.6°C25 Mar 2024	15.6°C1 Mar 1972	66 mm25 Mar 1963	158 mm2004 · driest 0 mm in 1996	64
April	35.6°C4 Apr 1996	16.7°C10 Apr 1984	117 mm17 Apr 2003	284 mm2003 · driest 3 mm in 1973	63
May	36.1°C7 May 1983	18.9°C5 May 1974	98 mm16 May 2015	254 mm1979 · driest 0 mm in 2020	63
June	37.2°C23 Jun 1996	19.4°C20 Jun 1972	86 mm18 Jun 1983	242 mm2010 · driest 0 mm in 1996	64
July	36.7°C27 Jul 1994	18.9°C22 Jul 1999	124 mm31 Jul 2019	197 mm2019 · driest 1 mm in 2007	62
August	37.2°C8 Aug 1979	18.3°C7 Aug 2001	108 mm17 Aug 2022	232 mm2011 · driest 5 mm in 2007	62
September	36.7°C1 Sep 1993	17.8°C17 Sep 1972	301 mm8 Sep 1953	380 mm1953 · driest 1 mm in 1972	59
October	36.1°C4 Oct 1992	17.8°C15 Oct 2015	168 mm5 Oct 2010	412 mm2010 · driest 45 mm in 1953	58
November	35.0°C1 Nov 1993	16.1°C25 Nov 1999	146 mm5 Nov 1984	467 mm2003 · driest 19 mm in 2023	59
December	33.3°C11 Dec 1995	16.7°C5 Dec 1972	126 mm3 Dec 1960	251 mm1960 · driest 0 mm in 1995	62

Typical days per month at CYRIL E KING AP, 1991–2020
Month	Days 25°C+	Days 30°C+	Heavy rain (10 mm+)
January	31	7	1
February	28	8	<1
March	31	10	1
April	30	15	2
May	30	23	3
June	30	29	2
July	30	30	2
August	31	30	3
September	30	29	3
October	31	28	4
November	30	21	4
December	30	13	2

How often, not how much — every day in CYRIL E KING 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	68%	32%	3%	41%	27.9–30.6°C
February	71%	29%	3%	32%	27.9–30.5°C
March	76%	24%	4%	28%	28.3–31.0°C
April	74%	26%	6%	29%	28.9–31.4°C
May	70%	30%	8%	36%	29.6–31.7°C
June	74%	26%	5%	32%	30.6–32.8°C
July	66%	34%	6%	47%	31.2–33.4°C
August	64%	37%	9%	50%	31.3–33.2°C
September	60%	41%	11%	60%	30.7–33.2°C
October	58%	42%	13%	62%	30.3–32.3°C
November	56%	44%	12%	57%	29.6–31.7°C
December	63%	37%	6%	50%	28.5–30.8°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.

1953Each stripe is one year’s mean temperature against the 49-year average. Warmest: 1994. Coolest: 1956.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4795186
NOAA station: VQW00011640 · CYRIL E KING AP
Station distance: 3.3 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 26 usable years
Daylight: Calculated from latitude 18.34°, 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 CYRIL E KING AP is what differs

Charlotte Amalie→Road Town→Tutu→Spanish Town→Cruz Bay→Culebra→

Or put two places side by side: Altona vs Charlotte Amalie

Best time to visitAltona.

March

March

March

The whole year,without the guesswork.

Altona runs -0.4°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Altona.

The whole year,
without the guesswork.

Altona runs -0.4°C
on the 1961–1990 baseline.

Nearby, measured,
and named.