Boston weather in August 2019

  • 27°C maximum daytime temperature in August in Boston27
    27°C max day temperature
  • 9 hours of sunshine per day
  • 10 days with some rainfall in August in Boston10
    10 days with some rainfall
  • 16°C minimum night-time temperature in August in Boston16
    16°C min night temperature
  • 14 hours of daylight per day in August in Boston14
    14 hours of daylight per day
  • Low heat & humidity in August in BostonL
    Low heat & humidity
  • 85 mm monthly rainfall in August in Boston85
    85 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in August in Boston8
    8 (Very High) UV index
  • 18°C sea temperature in August in Boston18
    18°C sea temperature

Going to Boston? Find the best month to visit Boston based on the weather.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Expect 27°C daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Boston in August. Check more long-term weather averages for Boston in August before you book your next holiday to Massachusetts in 2019/2020.

  • Check out the low fares on flights to the USA
  • Finnair flights connect in Helsinki Airport, Finland
  • Browse lowest fares available

More about Boston

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

The August weather guide for Boston, Massachusetts shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

Guide to Boston weather in August

The average maximum daytime temperature in Boston in August is a warm 27°C (81°F) with low heat & humidity. The average night-time temperature is usually a comfortable 16°C (61°F). There are usually 9 hours of bright sunshine each day, which represents 63% of the 14 hours of daylight.

Expect 85mm (3.3 inches) of rainfall across the whole of August with 10 days with some rain falling. Maximum UV levels will be very high (8 UV index) at midday when the skies are clear.

The average sea temperature in and around Boston in August is 18°C (64°F).

Boston sunrise & sunset times for August 2019

Browse the sunrise & sunset times for Boston in August 2019. Select a month to view Boston sunrise & sunset times for the next twelve months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st August 2019 05:37 20:04
Friday, 2nd August 2019 05:38 20:03
Saturday, 3rd August 2019 05:39 20:02
Sunday, 4th August 2019 05:40 20:00
Monday, 5th August 2019 05:41 19:59
Tuesday, 6th August 2019 05:42 19:58
Wednesday, 7th August 2019 05:43 19:57
Thursday, 8th August 2019 05:44 19:55
Friday, 9th August 2019 05:45 19:54
Saturday, 10th August 2019 05:46 19:53
Sunday, 11th August 2019 05:47 19:51
Monday, 12th August 2019 05:48 19:50
Tuesday, 13th August 2019 05:49 19:49
Wednesday, 14th August 2019 05:50 19:47
Thursday, 15th August 2019 05:51 19:46
Friday, 16th August 2019 05:52 19:44
Saturday, 17th August 2019 05:53 19:43
Sunday, 18th August 2019 05:54 19:41
Monday, 19th August 2019 05:55 19:40
Tuesday, 20th August 2019 05:56 19:38
Wednesday, 21st August 2019 05:58 19:37
Thursday, 22nd August 2019 05:59 19:35
Friday, 23rd August 2019 06:00 19:33
Saturday, 24th August 2019 06:01 19:32
Sunday, 25th August 2019 06:02 19:30
Monday, 26th August 2019 06:03 19:29
Tuesday, 27th August 2019 06:04 19:27
Wednesday, 28th August 2019 06:05 19:25
Thursday, 29th August 2019 06:06 19:24
Friday, 30th August 2019 06:07 19:22
Saturday, 31st August 2019 06:08 19:20
  • Check out the low fares on flights to the USA
  • Finnair flights connect in Helsinki Airport, Finland
  • Browse lowest fares available

Back to top

More Massachusetts destinations

All Massachusetts destinations >>

All destinations (A to Z)

Can't see your chosen destination? Use our A to Z search to find your required the holiday weather guide:

A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z  

Related posts

Popular travel offers

Top ^