Annual mean 24°C · wettest around February · prevailing wind E
Warmest
28.9 °C
Coldest
24.3 °C
Wettest
23%
Windiest
5.5 m/s
Prevailing
E
4.9 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
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 Kailua over the whole year is 24°C. August is the hottest month, with highs of about 29°C; February is the coldest, with lows of about 20°C. Kailua has no sharply defined rainy season: the chance of rain on a given day runs from 9% in August, the driest month, to 15% in February, the wettest. Winds in Kailua are highest in July, averaging 3.8 m/s (14 km/h), and lightest in January, at 2.9 m/s (10 km/h). The prevailing wind is from the E. The clearest skies in Kailua come in September, when the sky is typically 44% covered; July is the cloudiest month, at 55%.
Month by month Kailua 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
25°C
20°C
25°C
13%
45%
2.9 m/s
81
56
28
February
24°C
20°C
24°C
15%
51%
3.3 m/s
82
41
39
March
25°C
20°C
25°C
15%
53%
3.3 m/s
77
48
33
April
26°C
21°C
25°C
14%
52%
3.4 m/s
75
57
24
May
27°C
22°C
26°C
12%
52%
3.4 m/s
67
66
16
June
28°C
23°C
27°C
9%
51%
3.6 m/s
55
77
8
July
28°C
24°C
28°C
10%
55%
3.8 m/s
47
75
6
August
29°C
24°C
29°C
9%
50%
3.7 m/s
36
78
3
September
29°C
24°C
29°C
11%
44%
3.3 m/s
31
79
2
October
28°C
23°C
29°C
15%
46%
2.9 m/s
36
77
4
November
27°C
22°C
27°C
13%
48%
3.3 m/s
58
66
14
December
25°C
21°C
25°C
15%
49%
3.1 m/s
73
55
27
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 Kailua weather by season
Year round, Kailua has days of about 24°C at their warmest in February, its coolest month, and 29°C in August, its warmest; the coolest hours of the day run from 20°C to 24°C through the year, and the average temperature over the year is 24°C around the clock. Rain is most likely around February and least likely around August. 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.
Kailua weather in winterDecember to February
High 25°CLow 20°CRain 15%
Winter in Kailua has typical daily highs of about 25°C and lows of about 20°C, with a 15% chance of rain on a given day.
Kailua weather in springMarch to May
High 26°CLow 21°CRain 14%
Spring in Kailua has typical daily highs of about 26°C and lows of about 21°C, with a 14% chance of rain on a given day.
Kailua weather in summerJune to August
High 28°CLow 24°CRain 9%
Summer in Kailua has typical daily highs of about 28°C and lows of about 24°C, with a 9% chance of rain on a given day.
Kailua weather in autumnSeptember to November
High 28°CLow 23°CRain 13%
Autumn in Kailua has typical daily highs of about 28°C and lows of about 23°C, with a 13% chance of rain on a given day.
When is the rainy season in Kailua?
Kailua has no sharply defined rainy season: the chance of rain on a given day runs from 9% in August, the driest month, to 15% in February, the wettest.
What time of year is Kailua windiest?
Winds in Kailua are highest in July, averaging 3.8 m/s (14 km/h), and lightest in January, at 2.9 m/s (10 km/h). The prevailing wind is from the E.
What is the average temperature in Kailua year round?
The average temperature in Kailua over the whole year is 24°C. August is the hottest month, with highs of about 29°C; February is the coldest, with lows of about 20°C.