Annual mean 10°C · wettest around October · prevailing wind SW
Warmest
19.2 °C
Coldest
4.8 °C
Wettest
29%
Windiest
6.6 m/s
Prevailing
SW
5.3 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
never good
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Seaham over the whole year is 10°C. July is the hottest month, with highs of about 18°C; January is the coldest, with lows of about 3°C. Seaham has no sharply defined rainy season: the chance of rain on a given day runs from 16% in April, the driest month, to 22% in October, the wettest. Winds in Seaham are highest in February, averaging 5.4 m/s (19 km/h), and lightest in July, at 3.8 m/s (14 km/h). The prevailing wind is from the SW. The clearest skies in Seaham come in April, when the sky is typically 54% covered; December is the cloudiest month, at 60%.
Month by month Seaham climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
5°C
3°C
-0°C
22%
58%
4.9 m/s
0
0
7
February
7°C
4°C
1°C
21%
58%
5.4 m/s
0
0
12
March
9°C
4°C
3°C
21%
59%
4.7 m/s
1
0
24
April
11°C
5°C
6°C
16%
54%
4.2 m/s
4
0
40
May
14°C
9°C
10°C
17%
55%
3.9 m/s
19
0
69
June
17°C
12°C
13°C
18%
56%
4.0 m/s
39
2
78
July
18°C
13°C
16°C
21%
56%
3.8 m/s
56
4
80
August
18°C
13°C
15°C
20%
55%
4.0 m/s
52
3
81
September
16°C
11°C
13°C
20%
56%
4.0 m/s
32
1
77
October
12°C
9°C
8°C
22%
57%
4.5 m/s
6
0
59
November
8°C
6°C
4°C
22%
60%
4.4 m/s
0
0
28
December
6°C
4°C
1°C
22%
60%
4.8 m/s
0
0
13
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Seaham weather by season
Year round, Seaham has days of about 5°C at their warmest in January, its coolest month, and 18°C in July, its warmest; the coolest hours of the day run from 3°C to 13°C through the year, and the average temperature over the year is 10°C around the clock. Rain is most likely around October and least likely around April. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Seaham weather in winterDecember to February
High 6°CLow 4°CRain 22%
Winter in Seaham has typical daily highs of about 6°C and lows of about 4°C, with a 22% chance of rain on a given day.
Seaham weather in springMarch to May
High 11°CLow 6°CRain 18%
Spring in Seaham has typical daily highs of about 11°C and lows of about 6°C, with a 18% chance of rain on a given day.
Seaham weather in summerJune to August
High 18°CLow 13°CRain 20%
Summer in Seaham has typical daily highs of about 18°C and lows of about 13°C, with a 20% chance of rain on a given day.
Seaham weather in autumnSeptember to November
High 12°CLow 8°CRain 21%
Autumn in Seaham has typical daily highs of about 12°C and lows of about 8°C, with a 21% chance of rain on a given day.
When is the rainy season in Seaham?
Seaham has no sharply defined rainy season: the chance of rain on a given day runs from 16% in April, the driest month, to 22% in October, the wettest.
What time of year is Seaham windiest?
Winds in Seaham are highest in February, averaging 5.4 m/s (19 km/h), and lightest in July, at 3.8 m/s (14 km/h). The prevailing wind is from the SW.
What is the average temperature in Seaham year round?
The average temperature in Seaham over the whole year is 10°C. July is the hottest month, with highs of about 18°C; January is the coldest, with lows of about 3°C.