Mexico · 1991–2020

Best time to visit
Villa Unión.

December leads for comfortable weather in Villa Unión: typically 30.8°C by day, 13°C at night, with 8 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortDecember

Typical high30.8°C

Typical low13°C

Rain in December8 mm

Comfort

December

December · January · February

74climate match

Beach

October

October · November · June

79climate match

Outdoors

January

January · February · December

64climate match

The weakest month is August, scoring 13 against December’s 74 — days average 34.8°C, 11° above the 24°C the score treats as ideal, and 222 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

7130.9° / 11.5°

Feb

6931.6° / 11.5°

Mar

6532.9° / 11.6°

Apr

6234.6° / 13.5°

May

5536.2° / 17.4°

Jun

4436.5° / 23.1°

Jul

2235.4° / 23.7°

Aug

1334.8° / 23.3°

Sep

2534.4° / 23.3°

Oct

5134.9° / 21.4°

Nov

6633.5° / 16.7°

Dec

7430.8° / 13°

Monthly climate evidence for Villa Unión — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 18 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	30.9°C	11.5°C	18 mm	1.3	23.3°C	10 h 51	71	Good coverage
February	31.6°C	11.5°C	11 mm	0.8	22.5°C	11 h 21	69	Good coverage
March	32.9°C	11.6°C	3 mm	0.4	22.2°C	11 h 57	65	Good coverage
April	34.6°C	13.5°C	2 mm	0.2	23.2°C	12 h 40	62	Good coverage
May	36.2°C	17.4°C	0 mm	0	25.6°C	13 h 15	55	Good coverage
June	36.5°C	23.1°C	36 mm	3.1	27.8°C	13 h 33	44	Good coverage
July	35.4°C	23.7°C	162 mm	11.3	29.3°C	13 h 26	22	Good coverage
August	34.8°C	23.3°C	222 mm	14.3	30.0°C	12 h 56	13	Good coverage
September	34.4°C	23.3°C	175 mm	10.3	29.9°C	12 h 15	25	Good coverage
October	34.9°C	21.4°C	48 mm	3	29.6°C	11 h 34	51	Good coverage
November	33.5°C	16.7°C	31 mm	1.6	27.4°C	11 h	66	Good coverage
December	30.8°C	13°C	8 mm	1.1	24.7°C	10 h 43	74	Good coverage

Records at SIQUEROS, 1966–2013
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	36.7°C27 Jan 1988	3.9°C10 Jan 1997	71 mm12 Jan 1985	258 mm1992 · driest 0 mm in 1986	44
February	38.3°C23 Feb 1991	-0.6°C5 Feb 2011	75 mm2 Feb 2010	94 mm2010 · driest 0 mm in 1995	44
March	38.9°C21 Mar 1980	5.6°C11 Mar 2013	74 mm3 Mar 1968	114 mm1968 · driest 0 mm in 1969	44
April	42.8°C18 Apr 1991	6.7°C10 Apr 1979	11 mm3 Apr 1997	37 mm1997 · driest 0 mm in 1979	43
May	41.7°C12 May 1992	10.0°C2 May 1967	40 mm27 May 1983	40 mm1983 · driest 0 mm in 2001	43
June	41.7°C15 Jun 1994	13.9°C1 Jun 1967	101 mm30 Jun 1993	150 mm1993 · driest 0 mm in 1983	44
July	41.7°C7 Jul 1980	18.9°C7 Jul 1967	176 mm30 Jul 1985	367 mm1980 · driest 23 mm in 1973	43
August	40.6°C5 Aug 1988	20.0°C23 Aug 1968	116 mm23 Aug 2011	445 mm2011 · driest 71 mm in 1990	47
September	40.0°C14 Sep 1994	16.7°C30 Sep 1989	320 mm12 Sep 1968	410 mm2006 · driest 23 mm in 2011	45
October	40.6°C23 Oct 1992	11.7°C29 Oct 1966	139 mm16 Oct 1980	257 mm1986 · driest 0 mm in 2011	45
November	38.9°C9 Nov 1991	5.6°C29 Nov 2011	76 mm13 Nov 1991	188 mm1991 · driest 0 mm in 1967	42
December	38.3°C12 Dec 2003	3.9°C14 Dec 1997	52 mm15 Dec 1967	114 mm1974 · driest 0 mm in 1995	41

Typical days per month at SIQUEROS, 1991–2020
Month	Days 25°C+	Days 30°C+	Heavy rain (10 mm+)
January	30	23	<1
February	28	22	<1
March	31	28	<1
April	30	29	<1
May	31	31	0
June	30	30	1
July	31	31	4
August	31	31	6
September	30	29	4
October	31	30	1
November	30	28	<1
December	30	23	<1

How often, not how much — every day in SIQUEROS’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	95%	5%	2%	5%	28.1–32.4°C
February	97%	3%	1%	<1%	28.9–33.6°C
March	99%	2%	<1%	<1%	29.7–34.5°C
April	100%	<1%	<1%	<1%	32.0–36.9°C
May	100%	<1%	<1%	<1%	34.0–38.1°C
June	90%	10%	3%	14%	34.1–38.7°C
July	64%	36%	15%	50%	33.7–37.0°C
August	55%	45%	19%	67%	33.6–35.7°C
September	68%	32%	14%	38%	33.3–35.6°C
October	90%	10%	4%	7%	33.3–35.8°C
November	95%	6%	3%	4%	30.9–34.8°C
December	94%	6%	2%	3%	28.9–32.2°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.

1967Each stripe is one year’s mean temperature against the 36-year average. Warmest: 1994. Coolest: 2011.2012

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 3980125
NOAA station: MXN00025119 · SIQUEROS
Station distance: 16 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 21 usable years
Daylight: Calculated from latitude 23.19°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 18 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 SIQUEROS is what differs

Concordia→El Roble→Mesillas→El Verde→Escamillas→La Concepción→

Or put two places side by side: Villa Unión vs Concordia

Best time to visitVilla Unión.