Portland Water Temperature

Portland is a city close to Gulf of Maine. August is the month with the hottest water temperature at 63.5°F / 17.5°C. The coldest month is March with an ø water temperature of 37.2°F / 2.9°C. October is the month with the lowest precipitation of 0in / 0mm and January with the highest precipitation in a year with 1.7in / 43.1mm. The avg. air temperature is around 69.3°F / 20.7°C, July is the month with the highest temperature. January is the coolest with 24.1°F / -4.4°C average air temperature. June, July, August, September would be the best time to visit. Warm-summer humid continental climate would be the climate here.

Summary

Description Value
Current water temperature 51.8 °F / 11 °C
Warmest Month Water Temperature: August with 63.5°F / 17.5°C
Coldest Month Water Temperature: March with 37.2°F / 2.9°C
Warmest Month Air Temperature: July with 69.3°F / 20.7°C
Coldest Month Air Temperature: January with 24.1°F / -4.4°C
Wettest Month: January with 1.7in / 43.1mm
Highest Humidity June with 76%
Lowest Humidity April with 67.6%
Best Time to Visit: June, July, August, September
Climate Classification Warm-summer humid continental climate

Portland Water Temperature

Portland,United States of America: The current water temperature 51.8 °F

The temperature is too cold to swim

Gulf of Maine water temperature by month

Max. Water

Temperature

(°F)

ø. Water

Temperature

(°F)

Min. Water

Temperature

(°F)

January

42.6 40.8 38.8

February

38.7 37.8 37.2

March

38.5 37.4 36.9

April

44.1 40.8 38.5
May 51.3 47.5 44.1

June

58.6 55 51.3

July

63.5 61.3 58.1

August

64.2 63.3 61.9

September

62.6 60.1 57.6

October

57.4 54.1 50.7

November

50.9 48.7 46.8

December

46.8 44.6 42.6

Portland,United States of America: The current water temperature 11 °C

The temperature is too cold to swim

Gulf of Maine water temperature by month

Max. Water

Temperature

(°C)

ø. Water

Temperature

(°C)

Min. Water

Temperature

(°C)

January

5.9 4.9 3.8

February

3.7 3.2 2.9

March

3.6 3 2.7

April

6.7 4.9 3.6
May 10.7 8.6 6.7

June

14.8 12.8 10.7

July

17.5 16.3 14.5

August

17.9 17.4 16.6

September

17 15.6 14.2

October

14.1 12.3 10.4

November

10.5 9.3 8.2

December

8.2 7 5.9
August is the month with the highest water temperature at 63.5°F / 17.5°C. The month with the lowest is March with an average water temperature of 37.2°F / 2.9°C.

Portland weather forecast for the next 14 days

Date Weather High Temp. Low Temp. Rain? Windspeed Precipitation Humidity
Nov 27.
Partly Cloudy
54 °F
12 °C
39 °F
4 °C
0 %
3.1 mph
5 km/h
0 inch
0 mm
77%
Nov 28.
Patchy rain nearby
48 °F
9 °C
39 °F
4 °C
79 %
3.7 mph
6 km/h
0.1 inch
1.3 mm
84%
Nov 29.
Partly Cloudy
50 °F
10 °C
37 °F
3 °C
0 %
8.1 mph
13 km/h
0 inch
0 mm
78%
Nov 30.
Patchy rain nearby
48 °F
9 °C
39 °F
4 °C
71 %
8.7 mph
14 km/h
0.1 inch
1.6 mm
79%
Dec 01.
Partly Cloudy
50 °F
10 °C
37 °F
3 °C
0 %
8.7 mph
14 km/h
0 inch
0 mm
68%
Dec 02.
Overcast
46 °F
8 °C
37 °F
3 °C
0 %
9.3 mph
15 km/h
0 inch
0 mm
60%
Dec 03.
Partly Cloudy
48 °F
9 °C
37 °F
3 °C
0 %
9.3 mph
15 km/h
0 inch
0 mm
62%
Date Weather High Temp. Low Temp. Rain? Windspeed Precipitation Humidity
Dec 04.
Patchy rain nearby
54 °F
12 °C
45 °F
7 °C
84 %
4.3 mph
7 km/h
0.2 inch
4.2 mm
90%
Dec 05.
Patchy rain nearby
54 °F
12 °C
45 °F
7 °C
72 %
4.3 mph
7 km/h
0 inch
0.4 mm
79%
Dec 06.
Patchy rain nearby
57 °F
14 °C
46 °F
8 °C
85 %
4.3 mph
7 km/h
0 inch
0.3 mm
83%
Dec 07.
Moderate rain
48 °F
9 °C
36 °F
2 °C
85 %
3.1 mph
5 km/h
0.3 inch
8.2 mm
88%
Dec 08.
Overcast
45 °F
7 °C
39 °F
4 °C
0 %
11.8 mph
19 km/h
0 inch
0 mm
68%
Dec 09.
Heavy rain
52 °F
11 °C
41 °F
5 °C
88 %
10.6 mph
17 km/h
1.3 inch
32.4 mm
85%
Dec 09.
Heavy rain
52 °F
11 °C
41 °F
5 °C
88 %
10.6 mph
17 km/h
1.3 inch
32.4 mm
85%

Portland weather by month

Max.

Temperature

(°F)

ø.

Temperature

(°F)

Min.

Temperature

(°F)

Precip.

(inch)

Rainy Days

(day)

Rel. Humidity

(%)

January

35.8 24.1 12.6 1.7 0.7 69.8%

February

36 26.1 15.3 1.5 0 67.7%

March

45.7 32.7 21.6 0.1 1.2 67.8%

April

55 43.2 32.4 0.6 3.3 67.6%

May

66.2 53.1 42.1 0.6 0.6 73%

June

74.1 62.1 52 0.4 0.6 76%

July

77.2 69.3 62.2 0.4 0 75.3%

August

76.5 68.9 61.7 0.6 0 76%

September

73.4 63 54.9 0.2 0 75.9%

October

62.4 51.6 41 0 0 73.2%

November

54.9 41.7 32.7 0.3 0 71.5%

December

43 32 22.5 1.5 0.6 70.1%
Max.

Temperature

(°C)

ø.

Temperature

(°C)

Min.

Temperature

(°C)

Precip.

(mm)

Rainy Days

(days)

Rel. Humidity

(%)

January

2.1 -4.4 -10.8 43.1 0.7 69.8%

February

2.2 -3.3 -9.3 36.9 0 67.7%

March

7.6 0.4 -5.8 3.8 1.2 67.8%

April

12.8 6.2 0.2 16.2 3.3 67.6%

May

19 11.7 5.6 16.4 0.6 73%

June

23.4 16.7 11.1 9.1 0.6 76%

July

25.1 20.7 16.8 9 0 75.3%

August

24.7 20.5 16.5 16.4 0 76%

September

23 17.2 12.7 5.6 0 75.9%

October

16.9 10.9 5 0 0 73.2%

November

12.7 5.4 0.4 8 0 71.5%

December

6.1 0 -5.3 38.3 0.6 70.1%
October is the most draught at 0in / 0mm and January the month with the most rain around 1.7in / 43.1mm. The avg. temperature is around 69.3°F / 20.7°C, July is the hottest month in a year. January is the coolest with 24.1°F / -4.4°C avg. temperature.

Activities & POI in Portland

Type of Activity List
Beach East End Beach
Attraction Portland Discovery Land and Sea Tours, East End Beach, Portland Observatory
Golf Course South Portland Golf Course, Portland Country Club
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