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August weather forecast in Londonderry

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

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

Sun

Sunday

Mon

Monday

Tue

Tuesday

Wed

Wednesday

Thu

Thursday

Fri

Friday

Sat

Saturday

27 July, sun

	749 mmHg		70%
	3.7 m/s

27 July, Sunday. day, 27°; night, 18°; rain

28 July, mon

	749 mmHg		73%
	3.5 m/s

28 July, Monday. day, 28°; night, 18°; rain

29 July, tue

	749 mmHg		71%
	3.6 m/s

29 July, Tuesday. day, 27°; night, 18°; rain

30 July, wed

	750 mmHg		67%
	3.7 m/s

30 July, Wednesday. day, 27°; night, 17°; clear

31 July, thu

	751 mmHg		67%
	3.4 m/s

31 July, Thursday. day, 27°; night, 17°; clear

1 August, fri

	751 mmHg		69%
	3.5 m/s

1 August, Friday. day, 28°; night, 17°; partly cloudy

2 August, sat

	750 mmHg		69%
	3.4 m/s

2 August, Saturday. day, 28°; night, 18°; rain

3 August, sun

	750 mmHg		70%
	3.4 m/s

3 August, Sunday. day, 28°; night, 18°; rain

4 August, mon

	750 mmHg		73%
	3.4 m/s

4 August, Monday. day, 28°; night, 18°; rain

5 August, tue

	750 mmHg		71%
	3.6 m/s

5 August, Tuesday. day, 27°; night, 18°; partly cloudy

6 August, wed

	750 mmHg		68%
	3.8 m/s

6 August, Wednesday. day, 27°; night, 17°; clear

7 August, thu

	750 mmHg		69%
	3.6 m/s

7 August, Thursday. day, 27°; night, 16°; rain

8 August, fri

	750 mmHg		71%
	3.4 m/s

8 August, Friday. day, 27°; night, 17°; rain

9 August, sat

	750 mmHg		68%
	3.9 m/s

9 August, Saturday. day, 28°; night, 17°; clear

10 August, sun

	749 mmHg		69%
	3.6 m/s

10 August, Sunday. day, 28°; night, 18°; rain

11 August, mon

	749 mmHg		69%
	3.6 m/s

11 August, Monday. day, 27°; night, 18°; partly cloudy

12 August, tue

	750 mmHg		71%
	3.7 m/s

12 August, Tuesday. day, 26°; night, 18°; rain

13 August, wed

	750 mmHg		73%
	3.5 m/s

13 August, Wednesday. day, 26°; night, 18°; rain

14 August, thu

	750 mmHg		71%
	3.5 m/s

14 August, Thursday. day, 27°; night, 17°; partly cloudy

15 August, fri

	751 mmHg		73%
	3.4 m/s

15 August, Friday. day, 26°; night, 17°; overcast

16 August, sat

	751 mmHg		72%
	3.6 m/s

16 August, Saturday. day, 27°; night, 17°; overcast

17 August, sun

	751 mmHg		70%
	3.6 m/s

17 August, Sunday. day, 27°; night, 18°; partly cloudy

18 August, mon

	750 mmHg		70%
	3.8 m/s

18 August, Monday. day, 27°; night, 17°; rain

19 August, tue

	750 mmHg		67%
	3.7 m/s

19 August, Tuesday. day, 26°; night, 17°; clear

20 August, wed

	751 mmHg		67%
	3.6 m/s

20 August, Wednesday. day, 26°; night, 16°; clear

21 August, thu

	751 mmHg		71%
	3.6 m/s

21 August, Thursday. day, 26°; night, 16°; overcast

22 August, fri

	751 mmHg		72%
	3.9 m/s

22 August, Friday. day, 26°; night, 16°; rain

23 August, sat

	751 mmHg		71%
	3.7 m/s

23 August, Saturday. day, 25°; night, 16°; rain

24 August, sun

	751 mmHg		69%
	3.7 m/s

24 August, Sunday. day, 26°; night, 16°; clear

25 August, mon

	752 mmHg		71%
	3.7 m/s

25 August, Monday. day, 26°; night, 15°; clear

26 August, tue

	752 mmHg		69%
	3.4 m/s

26 August, Tuesday. day, 27°; night, 16°; clear

27 August, wed

	751 mmHg		69%
	3.4 m/s

27 August, Wednesday. day, 26°; night, 16°; clear

28 August, thu

	751 mmHg		71%
	3.7 m/s

28 August, Thursday. day, 26°; night, 16°; partly cloudy

29 August, fri

	751 mmHg		72%
	3.7 m/s

29 August, Friday. day, 25°; night, 15°; partly cloudy

30 August, sat

	751 mmHg		70%
	3.8 m/s

30 August, Saturday. day, 26°; night, 16°; clear

31 August, sun

	751 mmHg		67%
	4.1 m/s

31 August, Sunday. day, 26°; night, 16°; clear

1 September, mon

	752 mmHg		68%
	3.7 m/s

1 September, Monday. day, 25°; night, 15°; clear

2 September, tue

	752 mmHg		70%
	3.6 m/s

2 September, Tuesday. day, 24°; night, 14°; partly cloudy

3 September, wed

	751 mmHg		72%
	3.6 m/s

3 September, Wednesday. day, 25°; night, 15°; partly cloudy

4 September, thu

	750 mmHg		71%
	3.8 m/s

4 September, Thursday. day, 26°; night, 15°; clear

5 September, fri

	752 mmHg		68%
	4.1 m/s

5 September, Friday. day, 25°; night, 15°; clear

6 September, sat

	753 mmHg		70%
	3.7 m/s

6 September, Saturday. day, 25°; night, 14°; clear

Average data for 10 years

Londonderry August

10

sunny days

11

days with precipitation

6

cloudy days

10 sunny days; 11 days with precipitation; 6 cloudy days;

70

%

air humidity

2.5

m/s

WindSW

91

mm of precipitation

(8% of annual average)

air humidity 70%; 91 millimeters of precipitation (8% of annual average); Wind south-westerly 2.5 Meters per second

Weather graphs for August

TemperaturePrecipitation chance, %Humidity, %Wind, m/sPressure, mmHg

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

S

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

S

S

SW

SW

1

Average data for 10 years

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Daytime temperature

Night-time temperature

Cities near you

New York
Boston
Islandia
Montreal
Colchester
Quebec
Jamaica
Brooklyn
Laval

Cities with similar weather in August

Yerevan
Ankara
Bishkek
Toronto
Rio de Janeiro
Marseilles
Denver
Toulouse
Detroit

The weather forecast for August 2025 is based on historical data from the past 10 years.

In August, the weather in Londonderry is typically warm. Average daily high temperature in August is about 27 degrees above zero. On average, Londonderry has 11 rainy, 10 sunny, 7 partly cloudy, and 3 cloudy days in August. The rains are usually heavy.

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