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Monthly climate in Delta, British Columbia, Canada

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Delta features a oceanic climate (Cfb).Temperatures typically range between 2 °C (37 °F) and 18 °C (65 °F) through the year, but rarely can drop to -16 °C (4 °F) or can rise to as high as 37 °C (99 °F).The average annual precipitation amounts to about 2400 mm (94.5 inches) and receives 175 rainy days on the 1 mm (0.04 inches) threshold annually.Delta enjoys an average of 2716 hours of sunshine throughout the year, and daylight varies from 8 hours 15 minutes to 16 hours 8 minutes per day.

Monthly average temperatures in Delta, British Columbia, Canada §

The warmest months in Delta are June, July and August, with daily mean temperatures ranging from 15 to 18 °C (60 - 65 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 2 to 3 °C (37 - 38 °F) throughout the day. On average each year, Delta experiences 16 days above 25 °C (77.0 °F) and 31 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Delta, British Columbia, Canada.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 10°C
(51°F)		 12°C
(53°F)		 21°C
(70°F)		 23°C
(74°F)		 27°C
(80°F)		 37°C
(99°F)		 31°C
(88°F)		 33°C
(92°F)		 30°C
(86°F)		 22°C
(71°F)		 15°C
(58°F)		 11°C
(52°F)
Mean maximum 9°C
(49°F)		 10°C
(50°F)		 15°C
(58°F)		 19°C
(66°F)		 24°C
(75°F)		 27°C
(81°F)		 29°C
(84°F)		 30°C
(87°F)		 26°C
(79°F)		 18°C
(64°F)		 13°C
(56°F)		 10°C
(50°F)
Average high 5°C
(42°F)		 5°C
(41°F)		 9°C
(48°F)		 12°C
(54°F)		 16°C
(62°F)		 19°C
(66°F)		 22°C
(72°F)		 22°C
(73°F)		 18°C
(65°F)		 12°C
(54°F)		 9°C
(48°F)		 5°C
(42°F)
Daily mean 3°C
(38°F)		 2°C
(37°F)		 5°C
(42°F)		 8°C
(47°F)		 12°C
(55°F)		 15°C
(60°F)		 18°C
(64°F)		 18°C
(65°F)		 15°C
(59°F)		 9°C
(49°F)		 6°C
(44°F)		 3°C
(38°F)
Average low 2°C
(35°F)		 0°C
(33°F)		 3°C
(37°F)		 5°C
(41°F)		 8°C
(47°F)		 11°C
(52°F)		 13°C
(56°F)		 14°C
(57°F)		 12°C
(54°F)		 7°C
(45°F)		 4°C
(40°F)		 2°C
(35°F)
Mean minimum -6°C
(21°F)		 -7°C
(19°F)		 -2°C
(28°F)		 1°C
(34°F)		 4°C
(40°F)		 7°C
(45°F)		 10°C
(51°F)		 11°C
(51°F)		 8°C
(46°F)		 1°C
(35°F)		 -1°C
(30°F)		 -6°C
(21°F)
Minimum -10°C
(15°F)		 -11°C
(12°F)		 -3°C
(26°F)		 -1°C
(31°F)		 3°C
(38°F)		 6°C
(43°F)		 9°C
(49°F)		 10°C
(50°F)		 6°C
(44°F)		 -2°C
(29°F)		 -4°C
(24°F)		 -16°C
(4°F)

Compare climate in Delta with other places

Compare temperature, precipitation, sunshine, UV index in Delta, British Columbia, Canada with other places around the world.

Monthly average precipitation in Delta, British Columbia, Canada §

Delta usually has the most precipitation in January, November and December, with an average of 18 rainy days and 352 mm (13.8 inches) of precipitation per month.The driest months in Delta are June, July and August. On average, 61 mm (2.4 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Delta, British Columbia, Canada.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 320 (12.6) 193 (7.6) 214 (8.4) 174 (6.8) 99 (3.9) 96 (3.8) 41 (1.6) 46 (1.8) 205 (8.1) 279 (11.0) 411 (16.2) 324 (12.8)
Average precipitation days (≥ 1 mm) 17 18 17 17 11 13 5 7 14 17 20 19

Monthly sunshine hours in Delta, British Columbia, Canada §

The sunniest months in Delta are June, July and August, when the sun shines an average of 11 hours 39 minutes a day.Least sunny months in Delta: January, November and December receive an average of 3 hours 15 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Delta, British Columbia, Canada.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 81 143 203 236 330 340 385 346 249 180 122 96
Mean daily daylight hours 8h 43m 10h 10m 11h 56m 13h 46m 15h 20m 16h 8m 15h 41m 14h 16m 12h 31m 10h 42m 9h 6m 8h 15m

Solar UV radiation in Delta, British Columbia, Canada §

Delta experiences the highest level of ultraviolet (UV) radiation in May, July and August, when the maximum UV index can reach values of 8 - 9, which corresponds to the Very High category of sun exposure.January, November and December are in the Low exposure category. In these months, the maximum values of the UV index do not exceed 2. For more detailed information, check out our hourly Delta UV Index data.

Average daily maximum UV levels by month for Delta, British Columbia, Canada.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 2 3 4 6 8 8 9 8 6 4 2 1