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Monthly climate in Dauphin Island, Alabama, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Dauphin Island features a humid subtropical climate (Cfa).Temperatures typically range between 13 °C (56 °F) and 28 °C (83 °F) through the year, but rarely can drop to -1 °C (31 °F) or can rise to as high as 32 °C (90 °F).The average annual precipitation amounts to about 1682 mm (66.2 inches) and receives 143 rainy days on the 1 mm (0.04 inches) threshold annually.Dauphin Island enjoys an average of 3302 hours of sunshine throughout the year, and daylight varies from 10 hours 12 minutes to 14 hours 3 minutes per day.

Monthly average temperatures in Dauphin Island, Alabama, United States §

The warmest months in Dauphin Island are July, August and September, with daily mean temperatures ranging from 27 to 28 °C (81 - 83 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 13 to 16 °C (56 - 60 °F) throughout the day. On average each year, Dauphin Island experiences 136 days above 25 °C (77.0 °F) and 0 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Dauphin Island, Alabama, 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 23°C
(73°F)		 23°C
(73°F)		 25°C
(77°F)		 25°C
(77°F)		 29°C
(85°F)		 31°C
(88°F)		 31°C
(88°F)		 31°C
(88°F)		 32°C
(90°F)		 30°C
(86°F)		 25°C
(78°F)		 22°C
(72°F)
Mean maximum 21°C
(70°F)		 20°C
(69°F)		 23°C
(73°F)		 24°C
(75°F)		 28°C
(82°F)		 29°C
(85°F)		 31°C
(88°F)		 30°C
(87°F)		 31°C
(87°F)		 28°C
(83°F)		 24°C
(76°F)		 21°C
(71°F)
Average high 16°C
(60°F)		 17°C
(63°F)		 19°C
(67°F)		 22°C
(71°F)		 25°C
(77°F)		 28°C
(82°F)		 29°C
(84°F)		 29°C
(84°F)		 28°C
(83°F)		 25°C
(78°F)		 20°C
(69°F)		 17°C
(64°F)
Daily mean 13°C
(56°F)		 16°C
(60°F)		 18°C
(64°F)		 20°C
(69°F)		 24°C
(76°F)		 27°C
(81°F)		 28°C
(83°F)		 28°C
(83°F)		 27°C
(81°F)		 24°C
(76°F)		 18°C
(65°F)		 16°C
(60°F)
Average low 11°C
(53°F)		 14°C
(57°F)		 16°C
(62°F)		 19°C
(66°F)		 23°C
(74°F)		 26°C
(79°F)		 27°C
(81°F)		 27°C
(81°F)		 26°C
(79°F)		 23°C
(73°F)		 16°C
(62°F)		 14°C
(57°F)
Mean minimum 3°C
(37°F)		 6°C
(43°F)		 8°C
(46°F)		 12°C
(54°F)		 19°C
(66°F)		 24°C
(75°F)		 25°C
(77°F)		 25°C
(77°F)		 22°C
(73°F)		 15°C
(59°F)		 9°C
(49°F)		 7°C
(45°F)
Minimum -1°C
(31°F)		 -0°C
(32°F)		 4°C
(40°F)		 9°C
(49°F)		 16°C
(61°F)		 23°C
(73°F)		 24°C
(76°F)		 24°C
(76°F)		 20°C
(68°F)		 10°C
(51°F)		 4°C
(40°F)		 5°C
(42°F)

Compare climate in Dauphin Island with other places

Compare temperature, precipitation, sunshine, UV index in Dauphin Island, Alabama, United States with other places around the world.

Monthly average precipitation in Dauphin Island, Alabama, United States §

Dauphin Island usually has the most precipitation in June, August and September, with an average of 16 rainy days and 231 mm (9.1 inches) of precipitation per month.The driest months in Dauphin Island are January, March and November. On average, 73 mm (2.9 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Dauphin Island, Alabama, 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) 95 (3.7) 114 (4.5) 74 (2.9) 119 (4.7) 104 (4.1) 232 (9.2) 159 (6.3) 243 (9.6) 218 (8.6) 134 (5.3) 49 (1.9) 142 (5.6)
Average precipitation days (≥ 1 mm) 9 11 9 9 9 16 18 20 13 11 6 12

Monthly sunshine hours in Dauphin Island, Alabama, United States §

The sunniest months in Dauphin Island are May, July and August, when the sun shines an average of 10 hours 23 minutes a day.Least sunny months in Dauphin Island: January, February and December receive an average of 6 hours 54 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Dauphin Island, Alabama, 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 184 217 281 293 330 299 322 313 281 285 263 226
Mean daily daylight hours 10h 25m 11h 7m 12h 0m 12h 55m 13h 40m 14h 3m 13h 50m 13h 10m 12h 18m 11h 23m 10h 36m 10h 12m

Solar UV radiation in Dauphin Island, Alabama, United States §

Dauphin Island experiences the highest level of ultraviolet (UV) radiation in April, July and August, when the maximum UV index can reach values of 11 - 12, which corresponds to the Extreme category of sun exposure.January, November and December are in the Moderate / High exposure category. In these months, the maximum values of the UV index do not exceed 6. For more detailed information, check out our hourly Dauphin Island UV Index data.

Average daily maximum UV levels by month for Dauphin Island, Alabama, 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) 5 8 9 11 11 11 12 12 10 8 6 4