Annual mean 13°C · wettest around February · prevailing wind W
Warmest
28.2 °C
Coldest
2.2 °C
Wettest
50%
Windiest
4.7 m/s
Prevailing
W
3.8 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
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 Iselin over the whole year is 13°C. July is the hottest month, with highs of about 28°C; January is the coldest, with lows of about -1°C. Iselin has no sharply defined rainy season: the chance of rain on a given day runs from 34% in May, the driest month, to 47% in February, the wettest. Winds in Iselin are highest in March, averaging 3.9 m/s (14 km/h), and lightest in July, at 2.4 m/s (9 km/h). The prevailing wind is from the W. The clearest skies in Iselin come in November, when the sky is typically 35% covered; May is the cloudiest month, at 53%.
Month by month Iselin 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
3°C
-1°C
-3°C
45%
45%
3.7 m/s
1
0
8
February
5°C
1°C
-0°C
47%
45%
3.4 m/s
2
0
17
March
9°C
3°C
5°C
43%
43%
3.9 m/s
9
0
37
April
14°C
8°C
10°C
42%
45%
3.6 m/s
26
2
58
May
19°C
13°C
17°C
34%
53%
3.0 m/s
58
14
68
June
25°C
19°C
25°C
34%
41%
2.7 m/s
65
44
36
July
28°C
22°C
30°C
43%
38%
2.4 m/s
29
61
8
August
27°C
21°C
29°C
40%
39%
2.5 m/s
40
61
13
September
23°C
18°C
23°C
40%
43%
2.7 m/s
67
34
46
October
17°C
12°C
15°C
45%
41%
2.8 m/s
53
9
67
November
11°C
6°C
7°C
43%
35%
3.3 m/s
12
0
48
December
5°C
2°C
1°C
46%
45%
3.4 m/s
1
0
15
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 Iselin weather by season
Year round, Iselin has days of about 3°C at their warmest in January, its coolest month, and 28°C in July, its warmest; the coolest hours of the day run from -1°C to 22°C through the year, and the average temperature over the year is 13°C around the clock. Rain is most likely around February and least likely around May. 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.
Iselin weather in winterDecember to February
High 4°CLow 1°CRain 46%
Winter in Iselin has typical daily highs of about 4°C and lows of about 1°C, with a 46% chance of rain on a given day.
Iselin weather in springMarch to May
High 14°CLow 8°CRain 39%
Spring in Iselin has typical daily highs of about 14°C and lows of about 8°C, with a 39% chance of rain on a given day.
Iselin weather in summerJune to August
High 27°CLow 21°CRain 39%
Summer in Iselin has typical daily highs of about 27°C and lows of about 21°C, with a 39% chance of rain on a given day.
Iselin weather in autumnSeptember to November
High 17°CLow 12°CRain 42%
Autumn in Iselin has typical daily highs of about 17°C and lows of about 12°C, with a 42% chance of rain on a given day.
When is the rainy season in Iselin?
Iselin has no sharply defined rainy season: the chance of rain on a given day runs from 34% in May, the driest month, to 47% in February, the wettest.
What time of year is Iselin windiest?
Winds in Iselin are highest in March, averaging 3.9 m/s (14 km/h), and lightest in July, at 2.4 m/s (9 km/h). The prevailing wind is from the W.
What is the average temperature in Iselin year round?
The average temperature in Iselin over the whole year is 13°C. July is the hottest month, with highs of about 28°C; January is the coldest, with lows of about -1°C.