Template:Honolulu weatherbox
| Climate data for Honolulu International Airport (1991−2020 normals,[a] extremes 1877−present[b]) | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Record high °F (°C) | 88 (31) |
88 (31) |
89 (32) |
91 (33) |
93 (34) |
92 (33) |
94 (34) |
95 (35) |
95 (35) |
94 (34) |
93 (34) |
89 (32) |
95 (35) |
| Mean maximum °F (°C) | 84.0 (28.9) |
84.6 (29.2) |
85.0 (29.4) |
86.4 (30.2) |
88.5 (31.4) |
89.1 (31.7) |
90.4 (32.4) |
91.1 (32.8) |
91.2 (32.9) |
90.1 (32.3) |
87.3 (30.7) |
85.1 (29.5) |
91.7 (33.2) |
| Mean daily maximum °F (°C) | 80.5 (26.9) |
80.5 (26.9) |
81.2 (27.3) |
83.1 (28.4) |
84.8 (29.3) |
86.9 (30.5) |
88.1 (31.2) |
88.8 (31.6) |
88.4 (31.3) |
86.9 (30.5) |
84.1 (28.9) |
81.8 (27.7) |
84.6 (29.2) |
| Daily mean °F (°C) | 73.6 (23.1) |
73.8 (23.2) |
74.7 (23.7) |
76.6 (24.8) |
78.2 (25.7) |
80.3 (26.8) |
81.6 (27.6) |
82.2 (27.9) |
81.6 (27.6) |
80.4 (26.9) |
78.0 (25.6) |
75.5 (24.2) |
78.0 (25.6) |
| Mean daily minimum °F (°C) | 66.8 (19.3) |
67.1 (19.5) |
68.1 (20.1) |
70.1 (21.2) |
71.5 (21.9) |
73.8 (23.2) |
75.1 (23.9) |
75.6 (24.2) |
74.8 (23.8) |
73.9 (23.3) |
71.8 (22.1) |
69.2 (20.7) |
71.5 (21.9) |
| Mean minimum °F (°C) | 60.0 (15.6) |
60.2 (15.7) |
62.1 (16.7) |
64.6 (18.1) |
66.3 (19.1) |
70.1 (21.2) |
71.6 (22.0) |
71.8 (22.1) |
70.6 (21.4) |
69.0 (20.6) |
66.1 (18.9) |
63.1 (17.3) |
58.5 (14.7) |
| Record low °F (°C) | 52 (11) |
52 (11) |
53 (12) |
56 (13) |
60 (16) |
63 (17) |
63 (17) |
63 (17) |
64 (18) |
61 (16) |
57 (14) |
54 (12) |
52 (11) |
| Average precipitation inches (mm) | 1.84 (47) |
1.94 (49) |
2.36 (60) |
0.77 (20) |
0.82 (21) |
0.50 (13) |
0.52 (13) |
0.84 (21) |
0.88 (22) |
1.51 (38) |
2.25 (57) |
2.18 (55) |
16.41 (417) |
| Average precipitation days (≥ 0.01 in) | 7.7 | 7.6 | 8.7 | 7.5 | 6.0 | 6.3 | 7.3 | 5.7 | 7.2 | 7.7 | 8.6 | 8.9 | 89.2 |
| Average relative humidity (%) | 73.3 | 70.8 | 68.8 | 67.3 | 66.1 | 64.4 | 64.6 | 64.1 | 65.5 | 67.5 | 70.4 | 72.4 | 67.9 |
| Mean monthly sunshine hours | 213.5 | 212.7 | 259.2 | 251.8 | 280.6 | 286.1 | 306.2 | 303.1 | 278.8 | 244.0 | 200.4 | 199.5 | 3,035.9 |
| Percent possible sunshine | 63 | 66 | 69 | 66 | 69 | 71 | 74 | 76 | 76 | 68 | 60 | 59 | 68 |
| Average ultraviolet index | 6.8 | 8.5 | 10.2 | 11.2 | 11.6 | 11.8 | 12.2 | 12.2 | 11.1 | 8.9 | 6.8 | 6.0 | 9.7 |
| Source 1: NOAA (relative humidity and sun 1961–1990)[1][2][3] | |||||||||||||
| Source 2: UV Index Today (1995 to 2022)[4] | |||||||||||||
- ^ Mean monthly maxima and minima (i.e. the expected highest and lowest temperature readings at any point during the year or given month) calculated based on data at said location from 1991 to 2020.
- ^ Official records for Honolulu have been kept at downtown from February 1877 to September 1949, and at Honolulu Int'l since October 1949. For more information, see ThreadEx
- ^ "NowData – NOAA Online Weather Data". National Oceanic and Atmospheric Administration. Retrieved September 11, 2021.
- ^ "Station: Honolulu INTL AP, HI". U.S. Climate Normals 2020: U.S. Monthly Climate Normals (1991–2020). National Oceanic and Atmospheric Administration. Retrieved September 11, 2021.
- ^ "WMO Climate Normals for HONOLULU, OAHU, HI 1961–1990". National Oceanic and Atmospheric Administration. Retrieved September 11, 2021.
- ^ "Historical UV Index Data - Honolulu, HI". UV Index Today. Retrieved April 20, 2023.