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Monthly climate in Boston, Munster, Ireland

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Boston features a oceanic climate (Cfb).Temperatures typically range between 6 °C (44 °F) and 16 °C (60 °F) through the year, but rarely can drop to -5 °C (23 °F) or can rise to as high as 30 °C (86 °F).The average annual precipitation amounts to about 1217 mm (47.9 inches) and receives 190 rainy days on the 1 mm (0.04 inches) threshold annually.Boston enjoys an average of 2913 hours of sunshine throughout the year, and daylight varies from 7 hours 38 minutes to 16 hours 49 minutes per day.

Monthly average temperatures in Boston, Munster, Ireland §

The warmest months in Boston are June, July and August, with daily mean temperatures ranging from 14 to 16 °C (57 - 60 °F) throughout the day. The coldest temperatures usually occur in January, February and March, when daily mean temperatures range from 6 to 7 °C (44 - 45 °F) throughout the day. On average each year, Boston experiences 2 days above 25 °C (77.0 °F) and 10 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Boston, Munster, Ireland.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 14°C
(58°F)		 15°C
(60°F)		 17°C
(63°F)		 21°C
(70°F)		 25°C
(78°F)		 30°C
(86°F)		 29°C
(84°F)		 24°C
(75°F)		 26°C
(80°F)		 19°C
(67°F)		 16°C
(60°F)		 14°C
(57°F)
Mean maximum 12°C
(54°F)		 13°C
(55°F)		 15°C
(59°F)		 18°C
(65°F)		 22°C
(72°F)		 23°C
(74°F)		 24°C
(76°F)		 22°C
(72°F)		 22°C
(71°F)		 17°C
(63°F)		 14°C
(58°F)		 13°C
(56°F)
Average high 8°C
(48°F)		 9°C
(48°F)		 10°C
(50°F)		 13°C
(55°F)		 15°C
(59°F)		 17°C
(63°F)		 19°C
(66°F)		 18°C
(64°F)		 16°C
(61°F)		 13°C
(56°F)		 10°C
(51°F)		 9°C
(49°F)
Daily mean 6°C
(44°F)		 7°C
(44°F)		 7°C
(45°F)		 9°C
(49°F)		 12°C
(53°F)		 14°C
(57°F)		 16°C
(60°F)		 15°C
(59°F)		 13°C
(56°F)		 11°C
(52°F)		 8°C
(47°F)		 7°C
(45°F)
Average low 4°C
(40°F)		 4°C
(40°F)		 4°C
(40°F)		 6°C
(42°F)		 8°C
(47°F)		 11°C
(51°F)		 12°C
(55°F)		 12°C
(54°F)		 11°C
(51°F)		 8°C
(47°F)		 6°C
(43°F)		 5°C
(41°F)
Mean minimum -2°C
(28°F)		 -1°C
(30°F)		 -1°C
(31°F)		 -0°C
(32°F)		 3°C
(37°F)		 6°C
(43°F)		 9°C
(48°F)		 8°C
(47°F)		 5°C
(41°F)		 3°C
(38°F)		 0°C
(33°F)		 -0°C
(32°F)
Minimum -4°C
(25°F)		 -3°C
(27°F)		 -5°C
(23°F)		 -1°C
(30°F)		 -0°C
(32°F)		 5°C
(41°F)		 7°C
(44°F)		 7°C
(44°F)		 2°C
(36°F)		 0°C
(33°F)		 -2°C
(28°F)		 -2°C
(28°F)

Compare climate in Boston with other places

Compare temperature, precipitation, sunshine, UV index in Boston, Munster, Ireland with other places around the world.

Monthly average precipitation in Boston, Munster, Ireland §

Boston usually has the most precipitation in February, August and December, with an average of 19 rainy days and 134 mm (5.3 inches) of precipitation per month.The driest months in Boston are April, May and June. On average, 68 mm (2.7 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Boston, Munster, Ireland.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) 86 (3.4) 138 (5.4) 112 (4.4) 61 (2.4) 68 (2.7) 76 (3.0) 84 (3.3) 133 (5.2) 102 (4.0) 121 (4.8) 105 (4.1) 131 (5.2)
Average precipitation days (≥ 1 mm) 13 18 16 12 12 15 14 20 16 18 17 19

Monthly sunshine hours in Boston, Munster, Ireland §

The sunniest months in Boston are May, June and July, when the sun shines an average of 12 hours 36 minutes a day.Least sunny months in Boston: January, November and December receive an average of 3 hours 3 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Boston, Munster, Ireland.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 73 133 184 314 395 381 383 335 284 220 115 91
Mean daily daylight hours 8h 11m 9h 51m 11h 54m 14h 0m 15h 50m 16h 49m 16h 17m 14h 38m 12h 36m 10h 31m 8h 39m 7h 38m

Solar UV radiation in Boston, Munster, Ireland §

Boston experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 7 - 8, which corresponds to the High / Very High category of sun exposure.January, February 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 Boston UV Index data.

Average daily maximum UV levels by month for Boston, Munster, Ireland.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) 1 2 4 5 7 8 8 7 5 3 2 1