Joint Base Pearl Harbor Hickam weather in December
In December, Joint Base Pearl Harbor Hickam sees average daytime highs of 76°F and overnight lows near 73°F, with 1.9 in of rain across 4.6 wet days and about 10.7 hours of daylight. It is the 8th-warmest and 1st-wettest month of the year here.
Day-to-day highs hold fairly steady near 76°F through the month. The sky is clear or mostly clear about 64% of the time in December, and the air most often feels muggy.
Daylight stretches from about 10 h 48 min at the start of December to 10 h 42 min by month's end. Set against the rest of the year, December is Joint Base Pearl Harbor Hickam's 7th-clearest and 6th-windiest month. For the whole year in context, see Joint Base Pearl Harbor Hickam's year-round climate.
- Daytime high
- 76°
- 8th warmest
- Overnight low
- 73°
- 5th coldest
- Rainfall
- 1.9 in
- 4.6 wet days
- Daylight
- 10 h 42 min
- 7:07 AM – 5:49 PM
- Cloud cover
- 37%
- 7th clearest
- Wind
- 14 mph
- 6th windiest
- Solar energy
- 4.31 kWh/m²
- Travel score
- 8.3
- out of 10
Temperature in December
Day-to-day highs hold fairly steady near 76°F through the month.
A typical December day in Joint Base Pearl Harbor Hickam reaches about 76°F in the afternoon and slips back to 73°F overnight — a 3°F spread between the day's warmth and the night's chill. On most days the high lands between 74°F and 77°F. Set against its neighbours, December runs about 2°F cooler than November and on par with January.
| 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 75 |
| Avg low (°F) | 74 | 74 | 74 | 73 | 73 | 73 | 73 | 73 | 73 | 73 | 73 | 73 | 73 | 73 | 73 | 73 | 73 | 73 | 73 | 73 | 73 | 73 | 73 | 72 | 72 | 72 | 72 | 72 | 72 | 72 | 72 |
| Avg high (°F) | Avg low (°F) | |
|---|---|---|
| 1 | 76 | 74 |
| 2 | 76 | 74 |
| 3 | 76 | 74 |
| 4 | 76 | 73 |
| 5 | 76 | 73 |
| 6 | 76 | 73 |
| 7 | 76 | 73 |
| 8 | 76 | 73 |
| 9 | 76 | 73 |
| 10 | 76 | 73 |
| 11 | 76 | 73 |
| 12 | 76 | 73 |
| 13 | 76 | 73 |
| 14 | 76 | 73 |
| 15 | 76 | 73 |
| 16 | 76 | 73 |
| 17 | 76 | 73 |
| 18 | 75 | 73 |
| 19 | 75 | 73 |
| 20 | 75 | 73 |
| 21 | 75 | 73 |
| 22 | 75 | 73 |
| 23 | 75 | 73 |
| 24 | 75 | 72 |
| 25 | 75 | 72 |
| 26 | 75 | 72 |
| 27 | 75 | 72 |
| 28 | 75 | 72 |
| 29 | 75 | 72 |
| 30 | 75 | 72 |
| 31 | 75 | 72 |
Joint Base Pearl Harbor Hickam weather by month
How December compares with the rest of the year at a glance. December is the 8th-warmest and 1st-wettest month here — the current month is highlighted below.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 74° / 71° | 1.4 | 4.4 | 10.8 | 8.3 |
| Feb | 74° / 71° | 1.1 | 4.1 | 11.3 | 8.1 |
| Mar | 74° / 71° | 1.5 | 4.3 | 11.8 | 8.2 |
| Apr | 75° / 72° | 0.4 | 2.1 | 12.5 | 8.7 |
| May | 76° / 73° | 0.5 | 2.4 | 13 | 8.6 |
| Jun | 78° / 75° | 0.3 | 1 | 13.3 | 8.7 |
| Jul | 79° / 76° | 0.2 | 0.9 | 13.2 | 8.6 |
| Aug | 80° / 76° | 0.4 | 1.7 | 12.7 | 8.4 |
| Sep | 80° / 77° | 0.4 | 2.3 | 12.1 | 8.3 |
| Oct | 79° / 76° | 0.8 | 3 | 11.5 | 8.0 |
| Nov | 77° / 75° | 1.5 | 4.1 | 11 | 8.1 |
| Dec | 76° / 73° | 1.9 | 4.6 | 10.7 | 8.3 |
Cloud cover in December
The sky is clear or mostly clear about 64% of the time in December.
Beyond those clear spells, partly cloudy skies cover about 14% of December, with mostly cloudy or overcast conditions the remaining 22%. Skies tend to open up as the month goes on.
| 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 71 | 71 | 72 | 72 | 72 | 74 | 74 | 75 | 76 | 76 | 78 | 78 | 78 | 78 | 78 | 79 | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 82 | 82 | 82 | 83 |
| Cloudier (%) | 29 | 29 | 28 | 28 | 28 | 26 | 26 | 25 | 24 | 24 | 22 | 22 | 22 | 22 | 22 | 21 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 18 | 18 | 18 | 17 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 71 | 29 |
| 2 | 71 | 29 |
| 3 | 72 | 28 |
| 4 | 72 | 28 |
| 5 | 72 | 28 |
| 6 | 74 | 26 |
| 7 | 74 | 26 |
| 8 | 75 | 25 |
| 9 | 76 | 24 |
| 10 | 76 | 24 |
| 11 | 78 | 22 |
| 12 | 78 | 22 |
| 13 | 78 | 22 |
| 14 | 78 | 22 |
| 15 | 78 | 22 |
| 16 | 79 | 21 |
| 17 | 80 | 20 |
| 18 | 80 | 20 |
| 19 | 80 | 20 |
| 20 | 80 | 20 |
| 21 | 80 | 20 |
| 22 | 80 | 20 |
| 23 | 80 | 20 |
| 24 | 80 | 20 |
| 25 | 80 | 20 |
| 26 | 80 | 20 |
| 27 | 80 | 20 |
| 28 | 82 | 18 |
| 29 | 82 | 18 |
| 30 | 82 | 18 |
| 31 | 83 | 17 |
Chance of precipitation in December
Joint Base Pearl Harbor Hickam gets around 1.9 in of rain over 4.6 wet days in December, the wettest month. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 14% and peaks near 16% 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 14 | 14 | 14 | 15 | 15 | 15 | 15 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 15 | 15 |
| Rain chance (%) | |
|---|---|
| 1 | 14 |
| 2 | 14 |
| 3 | 14 |
| 4 | 14 |
| 5 | 14 |
| 6 | 14 |
| 7 | 14 |
| 8 | 14 |
| 9 | 13 |
| 10 | 13 |
| 11 | 13 |
| 12 | 13 |
| 13 | 13 |
| 14 | 13 |
| 15 | 13 |
| 16 | 14 |
| 17 | 14 |
| 18 | 14 |
| 19 | 15 |
| 20 | 15 |
| 21 | 15 |
| 22 | 15 |
| 23 | 16 |
| 24 | 16 |
| 25 | 16 |
| 26 | 16 |
| 27 | 16 |
| 28 | 16 |
| 29 | 16 |
| 30 | 15 |
| 31 | 15 |
Humidity in December
Most of December feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, December lands in the muggy band about 62% of days. Sticky, muggy-or-worse air turns up on roughly 67% 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 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 | 1 | 1 | 1 | 1 |
| Comfortable (%) | 3 | 3 | 3 | 3 | 3 | 4 | 4 | 4 | 5 | 5 | 5 | 6 | 6 | 6 | 6 | 6 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 6 | 7 | 7 | 8 | 9 | 10 |
| Humid (%) | 23 | 24 | 24 | 24 | 24 | 24 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 27 | 27 | 28 | 28 | 29 | 29 | 30 | 30 | 31 | 32 | 32 | 33 | 33 | 34 | 34 |
| Muggy (%) | 62 | 62 | 63 | 63 | 64 | 63 | 63 | 63 | 63 | 64 | 64 | 64 | 64 | 65 | 64 | 64 | 65 | 65 | 64 | 64 | 63 | 62 | 61 | 61 | 60 | 58 | 58 | 57 | 56 | 54 | 53 |
| Oppressive (%) | 12 | 11 | 10 | 10 | 9 | 9 | 8 | 8 | 7 | 6 | 6 | 5 | 5 | 4 | 4 | 4 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 2 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | |
|---|---|---|---|---|---|
| 1 | 0 | 3 | 23 | 62 | 12 |
| 2 | 0 | 3 | 24 | 62 | 11 |
| 3 | 0 | 3 | 24 | 63 | 10 |
| 4 | 0 | 3 | 24 | 63 | 10 |
| 5 | 0 | 3 | 24 | 64 | 9 |
| 6 | 0 | 4 | 24 | 63 | 9 |
| 7 | 0 | 4 | 25 | 63 | 8 |
| 8 | 0 | 4 | 25 | 63 | 8 |
| 9 | 0 | 5 | 25 | 63 | 7 |
| 10 | 0 | 5 | 25 | 64 | 6 |
| 11 | 0 | 5 | 25 | 64 | 6 |
| 12 | 0 | 6 | 25 | 64 | 5 |
| 13 | 0 | 6 | 25 | 64 | 5 |
| 14 | 0 | 6 | 25 | 65 | 4 |
| 15 | 0 | 6 | 26 | 64 | 4 |
| 16 | 0 | 6 | 26 | 64 | 4 |
| 17 | 0 | 5 | 27 | 65 | 3 |
| 18 | 0 | 5 | 27 | 65 | 3 |
| 19 | 0 | 5 | 28 | 64 | 3 |
| 20 | 0 | 5 | 28 | 64 | 3 |
| 21 | 0 | 5 | 29 | 63 | 3 |
| 22 | 1 | 5 | 29 | 62 | 3 |
| 23 | 1 | 5 | 30 | 61 | 3 |
| 24 | 1 | 5 | 30 | 61 | 3 |
| 25 | 1 | 5 | 31 | 60 | 3 |
| 26 | 1 | 6 | 32 | 58 | 3 |
| 27 | 1 | 7 | 32 | 58 | 2 |
| 28 | 1 | 7 | 33 | 57 | 2 |
| 29 | 1 | 8 | 33 | 56 | 2 |
| 30 | 1 | 9 | 34 | 54 | 2 |
| 31 | 1 | 10 | 34 | 53 | 2 |
Wind in December
Winds average 14 mph in December.
Across December, daily wind ranges from about 13 mph on the calmest days to 15 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (mph) | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 13 |
| 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 | breezy |
| Wind speed (mph) | Feels | |
|---|---|---|
| 1 | 15 | breezy |
| 2 | 15 | breezy |
| 3 | 15 | breezy |
| 4 | 15 | breezy |
| 5 | 15 | breezy |
| 6 | 15 | breezy |
| 7 | 15 | breezy |
| 8 | 15 | breezy |
| 9 | 15 | breezy |
| 10 | 15 | breezy |
| 11 | 15 | breezy |
| 12 | 15 | breezy |
| 13 | 15 | breezy |
| 14 | 15 | breezy |
| 15 | 15 | breezy |
| 16 | 15 | breezy |
| 17 | 14 | breezy |
| 18 | 14 | breezy |
| 19 | 14 | breezy |
| 20 | 14 | breezy |
| 21 | 14 | breezy |
| 22 | 14 | breezy |
| 23 | 14 | breezy |
| 24 | 14 | breezy |
| 25 | 13 | breezy |
| 26 | 13 | breezy |
| 27 | 13 | breezy |
| 28 | 13 | breezy |
| 29 | 13 | breezy |
| 30 | 13 | breezy |
| 31 | 13 | breezy |
Sunrise & sunset in December
Daylight runs from about 10 h 48 min at the start of December to 10 h 42 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 6 minutes over December. Sunrise moves from 6:58 AM to 7:13 AM, and sunset from 5:45 PM to 5:56 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 10.8 | 10.8 | 10.8 | 10.8 | 10.8 | 10.8 | 10.7 | 10.7 | 10.7 | 10.7 | 10.7 | 10.7 | 10.7 | 10.7 | 10.7 | 10.7 | 10.7 | 10.7 | 10.7 | 10.7 | 10.7 | 10.7 | 10.7 | 10.7 | 10.7 | 10.7 | 10.7 | 10.7 | 10.7 | 10.7 | 10.7 |
| Sunrise (AM) | 6:58 | 6:58 | 6:59 | 7:00 | 7:00 | 7:01 | 7:02 | 7:02 | 7:03 | 7:03 | 7:04 | 7:05 | 7:05 | 7:06 | 7:06 | 7:07 | 7:07 | 7:08 | 7:08 | 7:09 | 7:09 | 7:10 | 7:10 | 7:11 | 7:11 | 7:12 | 7:12 | 7:12 | 7:13 | 7:13 | 7:13 |
| Sunset (PM) | 5:45 | 5:45 | 5:46 | 5:46 | 5:46 | 5:46 | 5:46 | 5:47 | 5:47 | 5:47 | 5:47 | 5:48 | 5:48 | 5:48 | 5:49 | 5:49 | 5:50 | 5:50 | 5:50 | 5:51 | 5:51 | 5:52 | 5:52 | 5:53 | 5:53 | 5:54 | 5:54 | 5:55 | 5:55 | 5:56 | 5:56 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 10.8 | 6:58 | 5:45 |
| 2 | 10.8 | 6:58 | 5:45 |
| 3 | 10.8 | 6:59 | 5:46 |
| 4 | 10.8 | 7:00 | 5:46 |
| 5 | 10.8 | 7:00 | 5:46 |
| 6 | 10.8 | 7:01 | 5:46 |
| 7 | 10.7 | 7:02 | 5:46 |
| 8 | 10.7 | 7:02 | 5:47 |
| 9 | 10.7 | 7:03 | 5:47 |
| 10 | 10.7 | 7:03 | 5:47 |
| 11 | 10.7 | 7:04 | 5:47 |
| 12 | 10.7 | 7:05 | 5:48 |
| 13 | 10.7 | 7:05 | 5:48 |
| 14 | 10.7 | 7:06 | 5:48 |
| 15 | 10.7 | 7:06 | 5:49 |
| 16 | 10.7 | 7:07 | 5:49 |
| 17 | 10.7 | 7:07 | 5:50 |
| 18 | 10.7 | 7:08 | 5:50 |
| 19 | 10.7 | 7:08 | 5:50 |
| 20 | 10.7 | 7:09 | 5:51 |
| 21 | 10.7 | 7:09 | 5:51 |
| 22 | 10.7 | 7:10 | 5:52 |
| 23 | 10.7 | 7:10 | 5:52 |
| 24 | 10.7 | 7:11 | 5:53 |
| 25 | 10.7 | 7:11 | 5:53 |
| 26 | 10.7 | 7:12 | 5:54 |
| 27 | 10.7 | 7:12 | 5:54 |
| 28 | 10.7 | 7:12 | 5:55 |
| 29 | 10.7 | 7:13 | 5:55 |
| 30 | 10.7 | 7:13 | 5:56 |
| 31 | 10.7 | 7:13 | 5:56 |
Solar energy in December
Average shortwave solar energy reaching the ground each day in December, about 4.31 kWh/m² — the year's lowest.
For context, solar energy here swings from a low near 4.31 kWh/m² to a high of 7.26 kWh/m² in June across the year — December's 4.31 kWh/m² sits near the bottom.
| 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 4.3 | 4.3 | 4.2 | 4.2 | 4.2 | 4.2 | 4.2 | 4.2 | 4.2 | 4.2 | 4.2 | 4.2 | 4.2 | 4.2 | 4.2 | 4.2 | 4.2 | 4.2 | 4.2 | 4.2 | 4.3 | 4.3 | 4.3 | 4.3 | 4.3 | 4.3 | 4.4 | 4.4 | 4.4 | 4.4 | 4.4 |
| Level | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 4.3 | Bright |
| 2 | 4.3 | Bright |
| 3 | 4.2 | Bright |
| 4 | 4.2 | Bright |
| 5 | 4.2 | Bright |
| 6 | 4.2 | Bright |
| 7 | 4.2 | Bright |
| 8 | 4.2 | Bright |
| 9 | 4.2 | Bright |
| 10 | 4.2 | Bright |
| 11 | 4.2 | Bright |
| 12 | 4.2 | Bright |
| 13 | 4.2 | Bright |
| 14 | 4.2 | Bright |
| 15 | 4.2 | Bright |
| 16 | 4.2 | Bright |
| 17 | 4.2 | Bright |
| 18 | 4.2 | Bright |
| 19 | 4.2 | Bright |
| 20 | 4.2 | Bright |
| 21 | 4.3 | Bright |
| 22 | 4.3 | Bright |
| 23 | 4.3 | Bright |
| 24 | 4.3 | Bright |
| 25 | 4.3 | Bright |
| 26 | 4.3 | Bright |
| 27 | 4.4 | Bright |
| 28 | 4.4 | Bright |
| 29 | 4.4 | Bright |
| 30 | 4.4 | Bright |
| 31 | 4.4 | Bright |
Hazard calendar for Joint Base Pearl Harbor Hickam
None of Joint Base Pearl Harbor Hickam's seasonal hazards are active in December. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.
Joint Base Pearl Harbor Hickam sits in the eastern Pacific hurricane zone; the season peaks August–September.
Is December a good time to visit Joint Base Pearl Harbor Hickam?
Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
December is one of the better times to visit Joint Base Pearl Harbor Hickam for general sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Joint Base Pearl Harbor Hickam in December
From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In December, Joint Base Pearl Harbor Hickam sees daytime highs around 76°F and nights near 73°F. Worth packing: light clothes and a windbreaker. About 5 days see rain.
Sea temperature near Joint Base Pearl Harbor Hickam in December
The nearest coast averages about 77°F in December — 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 Joint Base Pearl Harbor Hickam in December
Clear-sky midday UV in December peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Joint Base Pearl Harbor Hickam 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 Joint Base Pearl Harbor Hickam?
Joint Base Pearl Harbor Hickam sits at 21.3°N, 157.9°W, 39 ft above sea level, in United States. The nearest listed city is Airport, 1.2 mi away.
Topography around Joint Base Pearl Harbor Hickam
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Joint Base Pearl Harbor Hickam.
Within 2 miles, the terrain around Joint Base Pearl Harbor Hickam has only modest variations in elevation — a maximum elevation change of 269 ft around an average of 20 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 2,812 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 3,983 ft.
The land around Joint Base Pearl Harbor Hickam is covered by artificial surfaces (42%) and water (27%) within 2 miles, trees (34%) and water (33%) 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 Joint Base Pearl Harbor Hickam (21.3491°, -157.9471°, elevation 39 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).