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Monthly climate in Brinnon, Washington, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Brinnon features a warm-summer Mediterranean climate (Csb).Temperatures typically range between 2 °C (36 °F) and 18 °C (64 °F) through the year, but rarely can drop to -11 °C (13 °F) or can rise to as high as 35 °C (95 °F).The average annual precipitation amounts to about 1571 mm (61.9 inches) and receives 194 rainy days on the 1 mm (0.04 inches) threshold annually.Brinnon enjoys an average of 2613 hours of sunshine throughout the year, and daylight varies from 8 hours 27 minutes to 15 hours 56 minutes per day.

Monthly average temperatures in Brinnon, Washington, United States §

The warmest months in Brinnon are July, August and September, with daily mean temperatures ranging from 14 to 18 °C (58 - 64 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 2 to 3 °C (36 - 38 °F) throughout the day. On average each year, Brinnon experiences 11 days above 25 °C (77.0 °F) and 47 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Brinnon, Washington, United States.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 11°C
(52°F)		 11°C
(52°F)		 18°C
(65°F)		 21°C
(70°F)		 25°C
(76°F)		 35°C
(95°F)		 29°C
(84°F)		 31°C
(88°F)		 28°C
(82°F)		 22°C
(72°F)		 15°C
(59°F)		 11°C
(53°F)
Mean maximum 9°C
(48°F)		 10°C
(50°F)		 13°C
(55°F)		 17°C
(63°F)		 21°C
(71°F)		 26°C
(78°F)		 27°C
(82°F)		 29°C
(85°F)		 25°C
(77°F)		 18°C
(64°F)		 13°C
(56°F)		 10°C
(50°F)
Average high 5°C
(41°F)		 5°C
(40°F)		 7°C
(45°F)		 10°C
(51°F)		 15°C
(59°F)		 18°C
(64°F)		 21°C
(70°F)		 22°C
(72°F)		 18°C
(65°F)		 12°C
(54°F)		 8°C
(46°F)		 5°C
(41°F)
Daily mean 3°C
(38°F)		 2°C
(36°F)		 4°C
(39°F)		 7°C
(44°F)		 11°C
(52°F)		 14°C
(57°F)		 17°C
(63°F)		 18°C
(64°F)		 14°C
(58°F)		 9°C
(48°F)		 6°C
(42°F)		 3°C
(37°F)
Average low 1°C
(34°F)		 -1°C
(31°F)		 1°C
(34°F)		 3°C
(38°F)		 7°C
(45°F)		 10°C
(51°F)		 13°C
(56°F)		 14°C
(57°F)		 11°C
(52°F)		 6°C
(43°F)		 3°C
(38°F)		 1°C
(34°F)
Mean minimum -5°C
(23°F)		 -7°C
(19°F)		 -4°C
(24°F)		 -1°C
(30°F)		 3°C
(37°F)		 6°C
(42°F)		 9°C
(49°F)		 10°C
(50°F)		 6°C
(42°F)		 1°C
(33°F)		 -2°C
(29°F)		 -6°C
(22°F)
Minimum -9°C
(17°F)		 -11°C
(13°F)		 -8°C
(18°F)		 -4°C
(26°F)		 1°C
(34°F)		 4°C
(39°F)		 8°C
(47°F)		 8°C
(46°F)		 4°C
(39°F)		 -1°C
(30°F)		 -6°C
(21°F)		 -10°C
(15°F)

Compare climate in Brinnon with other places

Compare temperature, precipitation, sunshine, UV index in Brinnon, Washington, United States with other places around the world.

Monthly average precipitation in Brinnon, Washington, United States §

Brinnon usually has the most precipitation in January, November and December, with an average of 19 rainy days and 205 mm (8.1 inches) of precipitation per month.The driest months in Brinnon are May, July and August. On average, 60 mm (2.4 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Brinnon, Washington, United States.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) 203 (8.0) 153 (6.0) 132 (5.2) 118 (4.7) 94 (3.7) 105 (4.1) 45 (1.8) 40 (1.6) 114 (4.5) 155 (6.1) 206 (8.1) 207 (8.1)
Average precipitation days (≥ 1 mm) 18 20 19 17 15 15 10 9 15 16 19 21

Monthly sunshine hours in Brinnon, Washington, United States §

The sunniest months in Brinnon are June, July and August, when the sun shines an average of 10 hours 55 minutes a day.Least sunny months in Brinnon: January, November and December receive an average of 3 hours 10 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Brinnon, Washington, United States.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 78 132 206 228 301 317 360 326 252 196 118 94
Mean daily daylight hours 8h 53m 10h 15m 11h 57m 13h 41m 15h 10m 15h 56m 15h 30m 14h 10m 12h 29m 10h 46m 9h 14m 8h 27m

Solar UV radiation in Brinnon, Washington, United States §

Brinnon experiences the highest level of ultraviolet (UV) radiation in May, June and July, when the maximum UV index can reach values of 9 - 9, which corresponds to the Very High category of sun exposure.January, February and December are in the Low / Moderate exposure category. In these months, the maximum values of the UV index do not exceed 3. For more detailed information, check out our hourly Brinnon UV Index data.

Average daily maximum UV levels by month for Brinnon, Washington, United States.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 5 6 9 9 9 8 7 5 3 2