Honolulu weather in April
In April, Honolulu sees average daytime highs of 75°F and overnight lows near 72°F, with 0.4 in of rain across 2.4 wet days and about 12.5 hours of daylight. It is the 9th-warmest and 8th-wettest month of the year here.
Day-to-day highs hold fairly steady near 75°F through the month. The sky is clear or mostly clear about 65% of the time in April, and the air most often feels muggy.
Daylight stretches from about 12 h 12 min at the start of April to 12 h 48 min by month's end. Set against the rest of the year, April is Honolulu's 8th-clearest and 4th-windiest month. For the whole year in context, see Honolulu's year-round climate.
- Daytime high
- 75°
- 9th warmest
- Overnight low
- 72°
- 4th coldest
- Rainfall
- 0.4 in
- 2.4 wet days
- Daylight
- 12 h 30 min
- 6:17 AM – 6:46 PM
- Cloud cover
- 37%
- 8th clearest
- Wind
- 17 mph
- 4th windiest
- Solar energy
- 6.76 kWh/m²
- Travel score
- 8.6
- out of 10
Honolulu is capital city of the U.S. state of Hawaii and seat of Honolulu County.
- Density
- 1,981/km²
- people per km²
- Founded
- 1907
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in April
Day-to-day highs hold fairly steady near 75°F through the month.
A typical April day in Honolulu reaches about 75°F in the afternoon and slips back to 72°F overnight — a 2°F spread between the day's warmth and the night's chill. On most days the high lands between 73°F and 76°F. Set against its neighbours, April runs on par with March and about 1°F cooler than May.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 74 | 74 | 74 | 74 | 74 | 74 | 74 | 74 | 74 | 74 | 74 | 74 | 74 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 75 |
| Avg low (°F) | 72 | 72 | 72 | 72 | 72 | 72 | 72 | 72 | 72 | 72 | 72 | 72 | 72 | 72 | 72 | 72 | 73 | 73 | 73 | 73 | 73 | 73 | 73 | 73 | 73 | 73 | 73 | 73 | 73 | 73 |
| Avg high (°F) | Avg low (°F) | |
|---|---|---|
| 1 | 74 | 72 |
| 2 | 74 | 72 |
| 3 | 74 | 72 |
| 4 | 74 | 72 |
| 5 | 74 | 72 |
| 6 | 74 | 72 |
| 7 | 74 | 72 |
| 8 | 74 | 72 |
| 9 | 74 | 72 |
| 10 | 74 | 72 |
| 11 | 74 | 72 |
| 12 | 74 | 72 |
| 13 | 74 | 72 |
| 14 | 75 | 72 |
| 15 | 75 | 72 |
| 16 | 75 | 72 |
| 17 | 75 | 73 |
| 18 | 75 | 73 |
| 19 | 75 | 73 |
| 20 | 75 | 73 |
| 21 | 75 | 73 |
| 22 | 75 | 73 |
| 23 | 75 | 73 |
| 24 | 75 | 73 |
| 25 | 75 | 73 |
| 26 | 75 | 73 |
| 27 | 75 | 73 |
| 28 | 75 | 73 |
| 29 | 75 | 73 |
| 30 | 75 | 73 |
Honolulu weather by month
How April compares with the rest of the year at a glance. April is the 9th-warmest and 8th-wettest month here — the current month is highlighted below.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 74° / 72° | 1.4 | 4.9 | 10.8 | 8.2 |
| Feb | 74° / 71° | 1.1 | 4.4 | 11.3 | 8.1 |
| Mar | 74° / 71° | 1.5 | 4.4 | 11.8 | 8.2 |
| Apr | 75° / 72° | 0.4 | 2.4 | 12.5 | 8.6 |
| May | 76° / 74° | 0.5 | 2.2 | 13 | 8.7 |
| Jun | 77° / 75° | 0.3 | 1.1 | 13.3 | 8.8 |
| Jul | 78° / 76° | 0.2 | 1 | 13.2 | 8.7 |
| Aug | 79° / 77° | 0.4 | 1.8 | 12.7 | 8.5 |
| Sep | 79° / 77° | 0.4 | 2.2 | 12.1 | 8.4 |
| Oct | 79° / 76° | 0.8 | 2.9 | 11.5 | 8.1 |
| Nov | 77° / 75° | 1.6 | 4.9 | 11 | 8.0 |
| Dec | 75° / 73° | 1.9 | 5.2 | 10.7 | 8.2 |
Cloud cover in April
The sky is clear or mostly clear about 65% of the time in April.
Beyond those clear spells, partly cloudy skies cover about 12% of April, with mostly cloudy or overcast conditions the remaining 22%.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 76 | 77 | 77 | 77 | 77 | 77 | 77 | 77 | 76 | 77 | 76 | 76 | 77 | 77 | 77 | 78 | 78 | 78 | 78 | 79 | 79 | 80 | 80 | 80 | 80 | 80 | 79 | 79 | 79 | 78 |
| Cloudier (%) | 24 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 24 | 23 | 24 | 24 | 23 | 23 | 23 | 22 | 22 | 22 | 22 | 21 | 21 | 20 | 20 | 20 | 20 | 20 | 21 | 21 | 21 | 22 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 76 | 24 |
| 2 | 77 | 23 |
| 3 | 77 | 23 |
| 4 | 77 | 23 |
| 5 | 77 | 23 |
| 6 | 77 | 23 |
| 7 | 77 | 23 |
| 8 | 77 | 23 |
| 9 | 76 | 24 |
| 10 | 77 | 23 |
| 11 | 76 | 24 |
| 12 | 76 | 24 |
| 13 | 77 | 23 |
| 14 | 77 | 23 |
| 15 | 77 | 23 |
| 16 | 78 | 22 |
| 17 | 78 | 22 |
| 18 | 78 | 22 |
| 19 | 78 | 22 |
| 20 | 79 | 21 |
| 21 | 79 | 21 |
| 22 | 80 | 20 |
| 23 | 80 | 20 |
| 24 | 80 | 20 |
| 25 | 80 | 20 |
| 26 | 80 | 20 |
| 27 | 79 | 21 |
| 28 | 79 | 21 |
| 29 | 79 | 21 |
| 30 | 78 | 22 |
Chance of precipitation in April
Honolulu gets around 0.4 in of rain over 2.4 wet days in April. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 8% and peaks near 12% on the wettest days.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 12 | 11 | 11 | 10 | 10 | 9 | 9 | 8 | 8 | 7 | 7 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 7 | 7 | 7 | 7 | 8 | 8 | 8 | 9 | 9 | 9 | 9 | 9 |
| Rain chance (%) | |
|---|---|
| 1 | 12 |
| 2 | 11 |
| 3 | 11 |
| 4 | 10 |
| 5 | 10 |
| 6 | 9 |
| 7 | 9 |
| 8 | 8 |
| 9 | 8 |
| 10 | 7 |
| 11 | 7 |
| 12 | 7 |
| 13 | 6 |
| 14 | 6 |
| 15 | 6 |
| 16 | 6 |
| 17 | 6 |
| 18 | 6 |
| 19 | 7 |
| 20 | 7 |
| 21 | 7 |
| 22 | 7 |
| 23 | 8 |
| 24 | 8 |
| 25 | 8 |
| 26 | 9 |
| 27 | 9 |
| 28 | 9 |
| 29 | 9 |
| 30 | 9 |
Humidity in April
Most of April feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, April lands in the muggy band about 62% of days. Sticky, muggy-or-worse air turns up on roughly 63% of them.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 |
| Comfortable (%) | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 6 | 6 | 6 | 5 | 5 | 4 | 4 | 4 | 4 | 3 | 3 | 3 | 4 | 4 | 4 | 4 | 4 | 5 | 5 | 5 | 6 | 6 |
| Humid (%) | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 34 | 34 | 34 | 34 | 35 | 35 | 35 | 34 | 34 | 34 | 33 | 32 | 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 |
| Muggy (%) | 57 | 58 | 58 | 58 | 58 | 58 | 58 | 58 | 59 | 58 | 58 | 60 | 60 | 60 | 60 | 60 | 61 | 62 | 62 | 63 | 63 | 64 | 65 | 66 | 66 | 66 | 67 | 68 | 68 | 69 |
| Oppressive (%) | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | |
|---|---|---|---|---|---|
| 1 | 1 | 7 | 33 | 57 | 2 |
| 2 | 0 | 7 | 33 | 58 | 2 |
| 3 | 0 | 7 | 33 | 58 | 2 |
| 4 | 0 | 7 | 33 | 58 | 2 |
| 5 | 0 | 7 | 33 | 58 | 2 |
| 6 | 0 | 7 | 33 | 58 | 2 |
| 7 | 0 | 7 | 33 | 58 | 2 |
| 8 | 0 | 7 | 33 | 58 | 2 |
| 9 | 0 | 6 | 33 | 59 | 2 |
| 10 | 0 | 6 | 34 | 58 | 2 |
| 11 | 0 | 6 | 34 | 58 | 2 |
| 12 | 0 | 5 | 34 | 60 | 1 |
| 13 | 0 | 5 | 34 | 60 | 1 |
| 14 | 0 | 4 | 35 | 60 | 1 |
| 15 | 0 | 4 | 35 | 60 | 1 |
| 16 | 0 | 4 | 35 | 60 | 1 |
| 17 | 0 | 4 | 34 | 61 | 1 |
| 18 | 0 | 3 | 34 | 62 | 1 |
| 19 | 0 | 3 | 34 | 62 | 1 |
| 20 | 0 | 3 | 33 | 63 | 1 |
| 21 | 0 | 4 | 32 | 63 | 1 |
| 22 | 0 | 4 | 31 | 64 | 1 |
| 23 | 0 | 4 | 30 | 65 | 1 |
| 24 | 0 | 4 | 29 | 66 | 1 |
| 25 | 1 | 4 | 28 | 66 | 1 |
| 26 | 1 | 5 | 27 | 66 | 1 |
| 27 | 1 | 5 | 26 | 67 | 1 |
| 28 | 1 | 5 | 25 | 68 | 1 |
| 29 | 1 | 6 | 24 | 68 | 1 |
| 30 | 1 | 6 | 23 | 69 | 1 |
Wind in April
Winds average 17 mph in April.
Across April, daily wind ranges from about 16 mph on the calmest days to 17 mph at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (mph) | 16 | 16 | 16 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 16 | 16 | 16 | 16 | 16 | 16 |
| Feels | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy |
| Wind speed (mph) | Feels | |
|---|---|---|
| 1 | 16 | breezy |
| 2 | 16 | breezy |
| 3 | 16 | breezy |
| 4 | 17 | breezy |
| 5 | 17 | breezy |
| 6 | 17 | breezy |
| 7 | 17 | breezy |
| 8 | 17 | breezy |
| 9 | 17 | breezy |
| 10 | 17 | breezy |
| 11 | 17 | breezy |
| 12 | 17 | breezy |
| 13 | 17 | breezy |
| 14 | 17 | breezy |
| 15 | 17 | breezy |
| 16 | 17 | breezy |
| 17 | 17 | breezy |
| 18 | 17 | breezy |
| 19 | 17 | breezy |
| 20 | 17 | breezy |
| 21 | 17 | breezy |
| 22 | 17 | breezy |
| 23 | 17 | breezy |
| 24 | 17 | breezy |
| 25 | 16 | breezy |
| 26 | 16 | breezy |
| 27 | 16 | breezy |
| 28 | 16 | breezy |
| 29 | 16 | breezy |
| 30 | 16 | breezy |
Sunrise & sunset in April
Daylight runs from about 12 h 12 min at the start of April to 12 h 48 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 36 minutes over April. Sunrise moves from 6:31 AM to 6:06 AM, and sunset from 6:42 PM to 6:51 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 12.2 | 12.2 | 12.2 | 12.2 | 12.3 | 12.3 | 12.3 | 12.3 | 12.3 | 12.4 | 12.4 | 12.4 | 12.4 | 12.4 | 12.5 | 12.5 | 12.5 | 12.5 | 12.5 | 12.6 | 12.6 | 12.6 | 12.6 | 12.6 | 12.7 | 12.7 | 12.7 | 12.7 | 12.7 | 12.8 |
| Sunrise (AM) | 6:31 | 6:30 | 6:29 | 6:28 | 6:27 | 6:26 | 6:25 | 6:24 | 6:23 | 6:22 | 6:21 | 6:20 | 6:20 | 6:19 | 6:18 | 6:17 | 6:16 | 6:15 | 6:14 | 6:14 | 6:13 | 6:12 | 6:11 | 6:10 | 6:10 | 6:09 | 6:08 | 6:08 | 6:07 | 6:06 |
| Sunset (PM) | 6:42 | 6:42 | 6:42 | 6:43 | 6:43 | 6:43 | 6:43 | 6:44 | 6:44 | 6:44 | 6:45 | 6:45 | 6:45 | 6:46 | 6:46 | 6:46 | 6:47 | 6:47 | 6:47 | 6:48 | 6:48 | 6:48 | 6:49 | 6:49 | 6:50 | 6:50 | 6:50 | 6:51 | 6:51 | 6:51 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 12.2 | 6:31 | 6:42 |
| 2 | 12.2 | 6:30 | 6:42 |
| 3 | 12.2 | 6:29 | 6:42 |
| 4 | 12.2 | 6:28 | 6:43 |
| 5 | 12.3 | 6:27 | 6:43 |
| 6 | 12.3 | 6:26 | 6:43 |
| 7 | 12.3 | 6:25 | 6:43 |
| 8 | 12.3 | 6:24 | 6:44 |
| 9 | 12.3 | 6:23 | 6:44 |
| 10 | 12.4 | 6:22 | 6:44 |
| 11 | 12.4 | 6:21 | 6:45 |
| 12 | 12.4 | 6:20 | 6:45 |
| 13 | 12.4 | 6:20 | 6:45 |
| 14 | 12.4 | 6:19 | 6:46 |
| 15 | 12.5 | 6:18 | 6:46 |
| 16 | 12.5 | 6:17 | 6:46 |
| 17 | 12.5 | 6:16 | 6:47 |
| 18 | 12.5 | 6:15 | 6:47 |
| 19 | 12.5 | 6:14 | 6:47 |
| 20 | 12.6 | 6:14 | 6:48 |
| 21 | 12.6 | 6:13 | 6:48 |
| 22 | 12.6 | 6:12 | 6:48 |
| 23 | 12.6 | 6:11 | 6:49 |
| 24 | 12.6 | 6:10 | 6:49 |
| 25 | 12.7 | 6:10 | 6:50 |
| 26 | 12.7 | 6:09 | 6:50 |
| 27 | 12.7 | 6:08 | 6:50 |
| 28 | 12.7 | 6:08 | 6:51 |
| 29 | 12.7 | 6:07 | 6:51 |
| 30 | 12.8 | 6:06 | 6:51 |
Solar energy in April
Average shortwave solar energy reaching the ground each day in April, about 6.76 kWh/m².
For context, solar energy here swings from a low near 4.29 kWh/m² to a high of 7.28 kWh/m² in June across the year — April's 6.76 kWh/m² falls in the middle.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 6.4 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.6 | 6.6 | 6.6 | 6.7 | 6.7 | 6.7 | 6.7 | 6.7 | 6.8 | 6.8 | 6.8 | 6.8 | 6.8 | 6.8 | 6.9 | 6.9 | 6.9 | 6.9 | 6.9 | 6.9 | 6.9 | 6.9 | 6.9 | 6.9 |
| Level | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 6.4 | Intense |
| 2 | 6.5 | Intense |
| 3 | 6.5 | Intense |
| 4 | 6.5 | Intense |
| 5 | 6.5 | Intense |
| 6 | 6.5 | Intense |
| 7 | 6.6 | Intense |
| 8 | 6.6 | Intense |
| 9 | 6.6 | Intense |
| 10 | 6.7 | Intense |
| 11 | 6.7 | Intense |
| 12 | 6.7 | Intense |
| 13 | 6.7 | Intense |
| 14 | 6.7 | Intense |
| 15 | 6.8 | Intense |
| 16 | 6.8 | Intense |
| 17 | 6.8 | Intense |
| 18 | 6.8 | Intense |
| 19 | 6.8 | Intense |
| 20 | 6.8 | Intense |
| 21 | 6.9 | Intense |
| 22 | 6.9 | Intense |
| 23 | 6.9 | Intense |
| 24 | 6.9 | Intense |
| 25 | 6.9 | Intense |
| 26 | 6.9 | Intense |
| 27 | 6.9 | Intense |
| 28 | 6.9 | Intense |
| 29 | 6.9 | Intense |
| 30 | 6.9 | Intense |
Hazard calendar for Honolulu
None of Honolulu's seasonal hazards are active in April. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.
Honolulu sits in the eastern Pacific hurricane zone; the season peaks August–September.
Is April a good time to visit Honolulu?
Our two travel scores rate April for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
April is one of the better times to visit Honolulu for general sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Honolulu in April
From April's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In April, Honolulu sees daytime highs around 75°F and nights near 72°F. Pack sun protection. Worth having: light clothes and a windbreaker.
Sea temperature near Honolulu in April
The nearest coast averages about 76°F in April — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea offshore is warmest in September at about 80°F and coldest in February near 75°F.
The water stays above 68°F all year — warm enough for a swim any month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°F) | 76 | 75 | 75 | 76 | 77 | 78 | 79 | 80 | 80 | 80 | 79 | 77 |
| Comfort | Warm | Warm | Warm | Warm | Warm | Warm | Warm | Warm | Warm | Warm | Warm | Warm |
| Sea temperature (°F) | Comfort | |
|---|---|---|
| Jan | 76 | Warm |
| Feb | 75 | Warm |
| Mar | 75 | Warm |
| Apr | 76 | Warm |
| May | 77 | Warm |
| Jun | 78 | Warm |
| Jul | 79 | Warm |
| Aug | 80 | Warm |
| Sep | 80 | Warm |
| Oct | 80 | Warm |
| Nov | 79 | Warm |
| Dec | 77 | Warm |
UV index in Honolulu in April
Clear-sky midday UV in April peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Honolulu peaks around July 21 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 at about 6 (high).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 7 | 9 | 10 | 11 | 10 | 11 | 12 | 12 | 12 | 9 | 7 | 6 |
| Level | High | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | High | High |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 7 | High |
| Feb | 9 | Very high |
| Mar | 10 | Extreme |
| Apr | 11 | Extreme |
| May | 10 | Extreme |
| Jun | 11 | Extreme |
| Jul | 12 | Extreme |
| Aug | 12 | Extreme |
| Sep | 12 | Extreme |
| Oct | 9 | Very high |
| Nov | 7 | High |
| Dec | 6 | High |
Where is Honolulu?
Honolulu sits at 21.3°N, 157.9°W, 16 ft above sea level, in United States. The nearest listed city is Ala Moana - Kakaʻako, 0.6 mi away.
Topography around Honolulu
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Honolulu.
Within 2 miles, the terrain around Honolulu has significant variations in elevation — a maximum elevation change of 860 ft around an average of 72 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 3,117 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 3,983 ft.
The land around Honolulu is covered by artificial surfaces (51%) and water (28%) within 2 miles, water (47%) and trees (30%) within 10 miles, and water (87%) within 50 miles.
United States travel facts
- Power plugs
- Type A / B
- 120 V · 60 Hz
- Prices
- ≈ 100% of US
- price level, 2025
- GDP per capita
- $90,027
- 2025
- Happiness
- 6.8 / 10
- World Happiness, 2025
- Safe drinking water
- 98%
- of population, 2024
- Homicide rate
- 5.8
- per 100k, 2023
- Road deaths
- 12.7
- per 100k/yr, 2019
- Income group
- High
- World Bank
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Honolulu (21.3069°, -157.8583°, elevation 16 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).