World Resorts USA Oahu

Oahu Monthly Weather Averages

Please click on any column to get detailed information about Oahu weather in that particular month. You will get daily weather information for that month for the last several years.

Day & Night air temperature, °F

jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0
14
28
42
56
70
84
98
76.6
78.5
81.0
82.5
82.1
81.3
80.9
78.2
76.6
76.0
75.3
76.2
71.3
73.0
74.3
75.2
74.9
74.6
73.8
72.3
71.2
70.3
69.3
70.1
Day temperature   
Night temperature

The warmest month in Oahu is september. The average daily temp is 82.5°F. The average nightly temp is 75.2°F.

Sea water temperature, °F

jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0
13
26
39
52
65
78
91
104
77.4
79.2
80.2
80.1
79.6
78.8
77.9
76.8
75.9
75.5
75.6
76.5

The warmest sea temperature usually observed in October. Average daily sea water temperature during this month is 80.2°F.

Precipitation total, in.

jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
0.1
0.3
0.4
0.6
0.7
0.9
1.0
0.9
0.4
0.4
0.1
0.2
0.3
0.2
0.4
0.7
0.7
0.5
0.5

September is the month with least precipitations during the year. The average precipitation totals for this month is 0.1 in. The month with most precipitation total is December.

Number of rainy days

jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0
2
1
0
0
0
0
0
0
0
1
1
1
1

This chart shows averages for the last three years. It shows medium and heavy rains only, it doesn't show light rains.

Wind speed, mph
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0
2
4
6
8
10
12
14
16
10
11.1
8.5
10.7
11.9
13.6
11.8
10.7
11.2
11.4
11
9.1
Sunny, partly cloudy and cloudy days
1
2
3
4
5
6
7
8
9
10
11
12
0
5
10
15
20
25
30
35
12
12
9
6
7
11
8
13
17
16
10
12
13
14
16
18
18
17
17
15
13
12
15
11
6
4
6
6
6
3
5
3
1
3
3
8
Cloudy days   
Partly cloudy days   
Sunny days
Average sunny hours
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0
1
2
3
4
5
6
7
8
5.4
5.5
6.1
6.7
6.9
6.5
7.4
5.9
4.9
5.6
5.6
5.8

Sunny hours are calculated based on the average daily number of hours while sunlight can reach the ground. It depends on day length and cloudiness during the day.

* Charts above show average data for the last 3 years.

Best time for vacation in Oahu

Sunniest months:
January 8 days
September 6 days
August 6 days
Warmest months:
September 82.5 °F
August 82.1 °F
July 81.3 °F
Warmest sea temp:
October 80.2 °F
September 80.1 °F
August 79.5 °F
Coldest months:
February 75.3 °F
March 76.0 °F
January 76.2 °F
Rainiest months:
March 1 day
December 1 day
April 1 day
Windiest months:
July 13.6 mph
August 11.9 mph
June 11.8 mph

Oahu on a weather map

Leaflet | Tiles © Esri
Places in USA:
Name
°F
+41°F
+45°F
+73°F
+73°F
+66°F
+55°F
+72°F
+43°F
+66°F
+57°F
+52°F
+68°F
+70°F
+70°F
+41°F
24 Hours Forecast
Oahu
Local time: 21:04
April 16, wednesday
0000
73°F
SW
8 mph
0300
73°F
SW
6 mph
0600
73°F
SW
4 mph
0900
75°F
W
3 mph
1200
75°F
N
5 mph
1500
75°F
NE
7 mph
1800
73°F
NE
5 mph
2100
73°F
E
2 mph
Units of measurement: °C / °F