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Canada · 1991–2020

Best time to visit
Delta.

July leads for comfortable weather in Delta: typically 22.4°C by day, 14°C at night, with 25 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJuly

Typical high22.4°C

Typical low14°C

Rain in July25 mm

Comfort

July

July · August · June

92climate match

Beach

July

July · August · June

59climate match

Outdoors

June

June · September · July

91climate match

The weakest month is January, scoring 5 against July’s 92 — days reach only 7.3°C, 17° below 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

57.3° / 2.7°

Feb

128.2° / 3.2°

Mar

2010.4° / 4.7°

Apr

3913.6° / 6.8°

May

6217.4° / 9.7°

Jun

7720° / 12.1°

Jul

9222.4° / 14°

Aug

9122° / 14.2°

Sep

7218.6° / 12.1°

Oct

3413.5° / 8.4°

Nov

89.6° / 5°

Dec

57° / 2.5°

Monthly climate evidence for Delta — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 7 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	7.3°C	2.7°C	144 mm	16.3	7.1°C	8 h 38	5	Strong coverage
February	8.2°C	3.2°C	79 mm	12.7	7.2°C	10 h 04	12	Strong coverage
March	10.4°C	4.7°C	87 mm	13.7	7.9°C	11 h 43	20	Strong coverage
April	13.6°C	6.8°C	66 mm	11.1	9.6°C	13 h 38	39	Strong coverage
May	17.4°C	9.7°C	47 mm	8.3	12.2°C	15 h 16	62	Strong coverage
June	20°C	12.1°C	38 mm	7.4	14.4°C	16 h 11	77	Strong coverage
July	22.4°C	14°C	25 mm	4.2	16.1°C	15 h 49	92	Strong coverage
August	22°C	14.2°C	30 mm	4.7	16.3°C	14 h 23	91	Strong coverage
September	18.6°C	12.1°C	48 mm	6.6	14.3°C	12 h 32	72	Strong coverage
October	13.5°C	8.4°C	111 mm	13	11.3°C	10 h 41	34	Strong coverage
November	9.6°C	5°C	140 mm	16.4	9.1°C	9 h 03	8	Strong coverage
December	7°C	2.5°C	134 mm	16.6	7.7°C	8 h 14	5	Strong coverage

Records at DELTA TSAWWASSEN BEACH, 1987–2024
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	14.5°C19 Jan 2005	-12.0°C12 Jan 2024	46 mm17 Jan 2005	273 mm2020 · driest 63 mm in 1988	38
February	15.5°C7 Feb 1998	-12.0°C2 Feb 1989	31 mm14 Feb 2007	140 mm1999 · driest 9 mm in 1993	38
March	19.0°C29 Mar 2004	-5.0°C11 Mar 2009	36 mm18 Mar 1997	182 mm2017 · driest 23 mm in 2021	38
April	23.0°C30 Apr 1998	-1.0°C20 Apr 2008	33 mm22 Apr 1996	146 mm1996 · driest 16 mm in 2004	38
May	27.5°C14 May 2023	3.5°C7 May 2002	26 mm20 May 2007	106 mm1988 · driest 1 mm in 2018	37
June	34.5°C27 Jun 2021	6.0°C10 Jun 2008	27 mm11 Jun 2000	81 mm1990 · driest 5 mm in 2015	37
July	32.5°C30 Jul 2009	7.5°C3 Jul 2018	36 mm30 Jul 2006	63 mm1993 · driest 0 mm in 2013	37
August	30.0°C12 Aug 2021	9.0°C25 Aug 2021	35 mm26 Aug 1991	136 mm1991 · driest 2 mm in 2012	36
September	30.0°C4 Sep 2022	4.0°C25 Sep 2018	44 mm16 Sep 2019	155 mm2010 · driest 3 mm in 2022	37
October	23.0°C4 Oct 2001	-1.5°C29 Oct 1991	88 mm16 Oct 2003	256 mm2003 · driest 4 mm in 2002	36
November	20.0°C8 Nov 2016	-9.0°C29 Nov 2006	86 mm14 Nov 2021	345 mm2021 · driest 53 mm in 2000	37
December	16.0°C9 Dec 2014	-11.5°C20 Dec 2008	56 mm4 Dec 2023	218 mm1996 · driest 55 mm in 2013	37

Typical days per month at DELTA TSAWWASSEN BEACH, 1991–2020
Month	Days 25°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	8	5	1
February	0	4	3	<1
March	0	2	3	<1
April	0	<1	2	0
May	<1	0	1	0
June	2	0	<1	0
July	5	0	<1	0
August	4	0	<1	0
September	<1	0	2	0
October	0	<1	4	0
November	0	3	5	<1
December	0	7	5	1

How often, not how much — every day in DELTA TSAWWASSEN BEACH’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	0%	50%	15%	69%	5.6–8.9°C
February	0%	46%	9%	65%	6.7–10.2°C
March	0%	43%	8%	57%	9.1–12.0°C
April	1%	36%	6%	47%	12.4–14.9°C
May	18%	27%	4%	30%	15.5–18.8°C
June	45%	23%	4%	25%	18.6–21.4°C
July	79%	14%	3%	10%	21.2–23.8°C
August	76%	14%	3%	14%	20.8–23.0°C
September	30%	22%	6%	25%	17.8–19.9°C
October	1%	39%	11%	58%	12.7–14.8°C
November	0%	54%	17%	76%	8.1–11.0°C
December	0%	53%	16%	75%	5.1–8.5°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.

1987Each stripe is one year’s mean temperature against the 35-year average. Warmest: 2023. Coolest: 2017.2023

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5937615
NOAA station: CA001102425 · DELTA TSAWWASSEN BEACH
Station distance: 8.7 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 29 usable years
Daylight: Calculated from latitude 49.09°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 7 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 DELTA TSAWWASSEN BEACH is what differs

Ladner→Tsawwassen→Point Roberts→Maple Beach→Beach Grove→Boundary Bay→

Or put two places side by side: Delta vs Ladner

Best time to visitDelta.

July

July

June

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Delta.

The whole year,
without the guesswork.

Nearby, measured,
and named.