Climate Insights for Head of Westport

Kalawao County, Massachusetts, United States

Hottest
August
23°C peak
Coldest
January
0°C low
Wettest
December
130mm rain
Best to Visit
June, July, August
Mild temps & low rain

Climate Overview

The climate in Head of Westport is temperate. The average annual temperature is 11°C and approximately 1259mm of precipitation falls per year. Head of Westport receives a notable amount of rainfall throughout the year, including during its driest month. Head of Westport is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, September. The coldest months are January, February, December, when temperatures can drop to 0°C. Snowfall occurs from January to December, with around 78cm accumulating over the season.

Temperature

10° 15° 20° 25° 30° Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Max: 4° Average: 2° Min: 0° Feb Max: 5° Average: 2° Min: 0° Mar Max: 6° Average: 4° Min: 2° Apr Max: 10° Average: 8° Min: 6° May Max: 14° Average: 13° Min: 11° Jun Max: 19° Average: 18° Min: 17° Jul Max: 23° Average: 22° Min: 21° Aug Max: 23° Average: 22° Min: 21° Sep Max: 21° Average: 19° Min: 18° Oct Max: 17° Average: 15° Min: 13° Nov Max: 12° Average: 9° Min: 7° Dec Max: 7° Average: 4° Min: 2°
Max
Average
Min

Temperatures in Head of Westport vary considerably across the year, with a 23°C difference between the coldest and warmest months. August is the warmest month, though highs remain moderate at 23°C with a mean of 22°C. The coldest month is January, when overnight lows fall to 0°C and the daily average is 2°C. Daily temperature variation is modest, with an average difference of 4°C between highs and lows. The sharpest temperature change occurs between October and November, with a 6°C shift in average temperatures.

Precipitation

0mm 25mm 50mm 75mm 100mm 125mm 150mm Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Precipitation: 124mm Snow: 21mm Feb Precipitation: 107mm Snow: 26mm Mar Precipitation: 115mm Snow: 18mm Apr Precipitation: 114mm Snow: 3mm May Precipitation: 109mm Snow: 0mm Jun Precipitation: 78mm Snow: 0mm Jul Precipitation: 92mm Snow: 0mm Aug Precipitation: 76mm Snow: 0mm Sep Precipitation: 103mm Snow: 0mm Oct Precipitation: 128mm Snow: 0mm Nov Precipitation: 84mm Snow: 1mm Dec Precipitation: 130mm Snow: 10mm
Precipitation
Snow

Head of Westport is a fairly wet location, receiving approximately 1259mm of precipitation annually, which averages out to around 105mm per month. The wettest month is December, averaging 130mm of rainfall. October and January also tend to see above-average precipitation. The driest month is August, with just 76mm. That's 54mm less than December, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Snowfall is a regular feature from January to December, with around 78cm accumulating over the season. February typically sees the most snow at around 26cm.

Wind

0km/h 5km/h 10km/h 15km/h 20km/h 25km/h Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Wind Speed: 25km/h Feb Wind Speed: 24km/h Mar Wind Speed: 24km/h Apr Wind Speed: 23km/h May Wind Speed: 20km/h Jun Wind Speed: 19km/h Jul Wind Speed: 18km/h Aug Wind Speed: 18km/h Sep Wind Speed: 19km/h Oct Wind Speed: 23km/h Nov Wind Speed: 25km/h Dec Wind Speed: 25km/h
Wind Speed

Head of Westport is moderately windy, with an average annual wind speed of 22km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is January, averaging 25km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in July, with average winds dropping to 18km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 7km/h gap between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 25km/h in winter, 23km/h in spring, 18km/h in summer, 22km/h in autumn.

Seasons

Winter
Dec 21
Spring
Mar 20
Summer
Jun 21
Autumn
Sep 23

7 days until Autumn

It is currently summer in Head of Westport, which began on June 21, 2026. Head of Westport is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in August at around 23°C, while the coldest stretch bottoms out in January near 0°C. Autumn is next, beginning on September 23, 2026 (7 days from now).

Spring

Temperatures range from 2 to 14°C. Rainfall is heavy, totalling around 339mm across the season with a monthly average of 113mm. Winds are moderate at around 23km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.

Summer

Temperatures range from 17 to 23°C. Precipitation is moderate at around 245mm for the season, averaging 82mm per month. Winds are moderate at around 18km/h. Light, breathable clothing is ideal. Perfect conditions for outdoor activities.

Autumn

Temperatures range from 7 to 21°C. Rainfall is heavy, totalling around 314mm across the season with a monthly average of 105mm. Winds are moderate at around 22km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.

Winter

Temperatures range from 0 to 7°C. Rainfall is heavy, totalling around 361mm across the season with a monthly average of 120mm. Expect around 56cm of snow accumulation during this period. Winds are moderate at around 25km/h. Warm winter clothing and waterproof boots are a must, and travel may be affected by snow.

Best Time to Visit

Jan
Feb
Mar
Apr
May 13°
Jun 18°
Jul 22°
Aug 22°
Sep 19°
Oct 15°
Nov
Dec

The best time to visit Head of Westport is during June, July and August, when the weather is most comfortable for travellers. During these months, average temperatures hover around 21°C with modest rainfall averaging 82mm per month. By contrast, January can be quite cold with temperatures dropping to 0°C. Despite being the best months overall, some rain is still likely. Pack a waterproof layer and plan a mix of indoor and outdoor activities.

Monthly Climate Data

The table below shows monthly climate averages for Head of Westport based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.

Month
Min Temperature
Max Temperature
Wind Speed
Precipitation
Snow
Jan
0 °C
4 °C
25 km/h
124 mm
21 cm
Feb
0 °C
5 °C
24 km/h
107 mm
26 cm
Mar
2 °C
6 °C
24 km/h
115 mm
18 cm
Apr
6 °C
10 °C
23 km/h
114 mm
3 cm
May
11 °C
14 °C
20 km/h
109 mm
0 cm
Jun
17 °C
19 °C
19 km/h
78 mm
0 cm
Jul
21 °C
23 °C
18 km/h
92 mm
0 cm
Aug
21 °C
23 °C
18 km/h
76 mm
0 cm
Sep Current
18 °C
21 °C
19 km/h
103 mm
0 cm
Oct
13 °C
17 °C
23 km/h
128 mm
0 cm
Nov
7 °C
12 °C
25 km/h
84 mm
1 cm
Dec
2 °C
7 °C
25 km/h
130 mm
10 cm
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