Jacksonville weather in May
In May, Jacksonville sees average daytime highs of 79°F and overnight lows near 61°F, with 4.1 in of rain across 11 wet days and about 13.8 hours of daylight. It is the 5th-warmest and 5th-wettest month of the year here.
Highs climb over the month, from about 76°F in the first days to 82°F by the end. The sky is clear or mostly clear about 33% of the time in May, and the air most often feels dry.
Daylight stretches from about 13 h 24 min at the start of May to 14 h 06 min by month's end. Set against the rest of the year, May is Jacksonville's 7th-clearest and 6th-windiest month. For the whole year in context, see Jacksonville's year-round climate.
- Daytime high
- 79°
- 5th warmest
- Overnight low
- 61°
- 8th coldest
- Rainfall
- 4.1 in
- 11 wet days
- Daylight
- 13 h 48 min
- 5:12 AM – 7:00 PM
- Cloud cover
- 57%
- 7th clearest
- Wind
- 7 mph
- 6th windiest
- Solar energy
- 6.04 kWh/m²
- Travel score
- 6.5
- out of 10
Jacksonville is city in Onslow County, North Carolina, United States.
- Density
- 513/km²
- people per km²
- Founded
- 1757
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in May
Highs climb over the month, from about 76°F in the first days to 82°F by the end.
A typical May day in Jacksonville reaches about 79°F in the afternoon and slips back to 61°F overnight — a 18°F spread between the day's warmth and the night's chill. On most days the high lands between 71°F and 87°F. Set against its neighbours, May runs about 7°F warmer than April and about 6°F cooler than June.
| 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 | 77 | 77 | 77 | 77 | 78 | 78 | 78 | 78 | 78 | 79 | 79 | 79 | 79 | 80 | 80 | 80 | 80 | 80 | 81 | 81 | 81 | 82 | 82 | 82 | 82 | 82 | 83 |
| Avg low (°F) | 57 | 57 | 58 | 58 | 58 | 58 | 59 | 59 | 59 | 60 | 60 | 60 | 60 | 61 | 61 | 61 | 61 | 62 | 62 | 62 | 62 | 63 | 63 | 63 | 64 | 64 | 64 | 65 | 65 | 65 | 65 |
| Avg high (°F) | Avg low (°F) | |
|---|---|---|
| 1 | 76 | 57 |
| 2 | 76 | 57 |
| 3 | 76 | 58 |
| 4 | 76 | 58 |
| 5 | 77 | 58 |
| 6 | 77 | 58 |
| 7 | 77 | 59 |
| 8 | 77 | 59 |
| 9 | 78 | 59 |
| 10 | 78 | 60 |
| 11 | 78 | 60 |
| 12 | 78 | 60 |
| 13 | 78 | 60 |
| 14 | 79 | 61 |
| 15 | 79 | 61 |
| 16 | 79 | 61 |
| 17 | 79 | 61 |
| 18 | 80 | 62 |
| 19 | 80 | 62 |
| 20 | 80 | 62 |
| 21 | 80 | 62 |
| 22 | 80 | 63 |
| 23 | 81 | 63 |
| 24 | 81 | 63 |
| 25 | 81 | 64 |
| 26 | 82 | 64 |
| 27 | 82 | 64 |
| 28 | 82 | 65 |
| 29 | 82 | 65 |
| 30 | 82 | 65 |
| 31 | 83 | 65 |
How May really feels in Jacksonville
Once humidity and wind are folded in, May averages 0 days that feel above 90°F and 0 that feel at or below 32°F — the comfort signal a plain temperature reading hides.
May sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Jacksonville weather by month
How May compares with the rest of the year at a glance. May is the 5th-warmest and 5th-wettest month here — the current month is highlighted below.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 55° / 37° | 3.6 | 9 | 0.6 | 9.9 | 3.7 |
| Feb | 58° / 39° | 3.3 | 8.9 | 0.5 | 10.7 | 4.4 |
| Mar | 64° / 44° | 3.6 | 9.4 | 0.1 | 11.7 | 6.0 |
| Apr | 73° / 53° | 3.3 | 8.8 | 0 | 12.8 | 7.0 |
| May | 79° / 61° | 4.1 | 11 | 0 | 13.8 | 6.5 |
| Jun | 85° / 69° | 5.6 | 15.5 | 0 | 14.3 | 4.5 |
| Jul | 87° / 73° | 6.7 | 19.8 | 0 | 14.1 | 3.6 |
| Aug | 86° / 72° | 6.8 | 17.3 | 0 | 13.3 | 4.1 |
| Sep | 82° / 66° | 6.5 | 13.3 | 0 | 12.2 | 5.7 |
| Oct | 74° / 56° | 4.0 | 8.5 | 0 | 11.1 | 7.1 |
| Nov | 65° / 45° | 3.6 | 7.9 | 0 | 10.2 | 6.4 |
| Dec | 58° / 40° | 3.6 | 9.4 | 0.1 | 9.7 | 4.5 |
Cloud cover in May
The sky is clear or mostly clear about 33% of the time in May.
Beyond those clear spells, partly cloudy skies cover about 19% of May, with mostly cloudy or overcast conditions the remaining 49%. Skies tend to cloud over 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 (%) | 54 | 54 | 54 | 54 | 54 | 54 | 54 | 54 | 53 | 53 | 53 | 53 | 53 | 52 | 52 | 52 | 52 | 52 | 51 | 51 | 50 | 49 | 50 | 49 | 49 | 49 | 48 | 48 | 47 | 47 | 47 |
| Cloudier (%) | 46 | 46 | 46 | 46 | 46 | 46 | 46 | 46 | 47 | 47 | 47 | 47 | 47 | 48 | 48 | 48 | 48 | 48 | 49 | 49 | 50 | 51 | 50 | 51 | 51 | 51 | 52 | 52 | 53 | 53 | 53 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 54 | 46 |
| 2 | 54 | 46 |
| 3 | 54 | 46 |
| 4 | 54 | 46 |
| 5 | 54 | 46 |
| 6 | 54 | 46 |
| 7 | 54 | 46 |
| 8 | 54 | 46 |
| 9 | 53 | 47 |
| 10 | 53 | 47 |
| 11 | 53 | 47 |
| 12 | 53 | 47 |
| 13 | 53 | 47 |
| 14 | 52 | 48 |
| 15 | 52 | 48 |
| 16 | 52 | 48 |
| 17 | 52 | 48 |
| 18 | 52 | 48 |
| 19 | 51 | 49 |
| 20 | 51 | 49 |
| 21 | 50 | 50 |
| 22 | 49 | 51 |
| 23 | 50 | 50 |
| 24 | 49 | 51 |
| 25 | 49 | 51 |
| 26 | 49 | 51 |
| 27 | 48 | 52 |
| 28 | 48 | 52 |
| 29 | 47 | 53 |
| 30 | 47 | 53 |
| 31 | 47 | 53 |
Chance of precipitation in May
Jacksonville gets around 4.1 in of rain over 11 wet days in May. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 36% and peaks near 44% on the wettest days. The odds climb toward the end of the month.
| 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 (%) | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 32 | 32 | 33 | 34 | 34 | 35 | 35 | 36 | 36 | 37 | 37 | 38 | 38 | 39 | 39 | 39 | 40 | 40 | 41 | 41 | 42 | 43 | 44 |
| Rain chance (%) | |
|---|---|
| 1 | 31 |
| 2 | 31 |
| 3 | 31 |
| 4 | 31 |
| 5 | 31 |
| 6 | 31 |
| 7 | 31 |
| 8 | 31 |
| 9 | 32 |
| 10 | 32 |
| 11 | 33 |
| 12 | 34 |
| 13 | 34 |
| 14 | 35 |
| 15 | 35 |
| 16 | 36 |
| 17 | 36 |
| 18 | 37 |
| 19 | 37 |
| 20 | 38 |
| 21 | 38 |
| 22 | 39 |
| 23 | 39 |
| 24 | 39 |
| 25 | 40 |
| 26 | 40 |
| 27 | 41 |
| 28 | 41 |
| 29 | 42 |
| 30 | 43 |
| 31 | 44 |
Humidity in May
Most of May feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, May lands in the dry band about 26% of days. Sticky, muggy-or-worse air turns up on roughly 33% 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 (%) | 43 | 42 | 40 | 39 | 38 | 37 | 36 | 35 | 34 | 32 | 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 22 | 21 | 20 | 19 | 17 | 16 | 15 | 14 | 13 | 12 | 11 | 10 | 10 |
| Comfortable (%) | 23 | 23 | 22 | 22 | 21 | 21 | 21 | 21 | 20 | 20 | 20 | 20 | 19 | 19 | 19 | 19 | 18 | 18 | 18 | 18 | 18 | 17 | 17 | 16 | 16 | 15 | 15 | 14 | 13 | 13 | 12 |
| Humid (%) | 20 | 20 | 21 | 21 | 22 | 22 | 23 | 23 | 23 | 24 | 24 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 24 | 24 | 24 | 23 | 23 | 22 | 22 | 21 | 21 | 20 |
| Muggy (%) | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 19 | 20 | 21 | 21 | 22 | 23 | 23 | 24 | 25 | 26 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 37 | 37 |
| Oppressive (%) | 1 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 4 | 4 | 4 | 5 | 5 | 6 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 18 | 19 | 21 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | |
|---|---|---|---|---|---|
| 1 | 43 | 23 | 20 | 13 | 1 |
| 2 | 42 | 23 | 20 | 14 | 2 |
| 3 | 40 | 22 | 21 | 15 | 2 |
| 4 | 39 | 22 | 21 | 16 | 2 |
| 5 | 38 | 21 | 22 | 17 | 2 |
| 6 | 37 | 21 | 22 | 18 | 2 |
| 7 | 36 | 21 | 23 | 19 | 2 |
| 8 | 35 | 21 | 23 | 19 | 2 |
| 9 | 34 | 20 | 23 | 20 | 3 |
| 10 | 32 | 20 | 24 | 21 | 3 |
| 11 | 31 | 20 | 24 | 21 | 3 |
| 12 | 30 | 20 | 25 | 22 | 4 |
| 13 | 29 | 19 | 25 | 23 | 4 |
| 14 | 28 | 19 | 25 | 23 | 4 |
| 15 | 27 | 19 | 25 | 24 | 5 |
| 16 | 26 | 19 | 25 | 25 | 5 |
| 17 | 25 | 18 | 25 | 26 | 6 |
| 18 | 24 | 18 | 25 | 26 | 6 |
| 19 | 22 | 18 | 25 | 27 | 7 |
| 20 | 21 | 18 | 25 | 28 | 8 |
| 21 | 20 | 18 | 25 | 29 | 9 |
| 22 | 19 | 17 | 24 | 30 | 10 |
| 23 | 17 | 17 | 24 | 31 | 11 |
| 24 | 16 | 16 | 24 | 32 | 12 |
| 25 | 15 | 16 | 23 | 33 | 13 |
| 26 | 14 | 15 | 23 | 34 | 14 |
| 27 | 13 | 15 | 22 | 35 | 15 |
| 28 | 12 | 14 | 22 | 36 | 16 |
| 29 | 11 | 13 | 21 | 37 | 18 |
| 30 | 10 | 13 | 21 | 37 | 19 |
| 31 | 10 | 12 | 20 | 37 | 21 |
Wind in May
Winds average 7 mph in May.
Across May, daily wind ranges from about 6 mph on the calmest days to 7 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) | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (mph) | Feels | |
|---|---|---|
| 1 | 7 | calm |
| 2 | 7 | calm |
| 3 | 7 | calm |
| 4 | 7 | calm |
| 5 | 7 | calm |
| 6 | 7 | calm |
| 7 | 7 | calm |
| 8 | 7 | calm |
| 9 | 7 | calm |
| 10 | 7 | calm |
| 11 | 7 | calm |
| 12 | 7 | calm |
| 13 | 7 | calm |
| 14 | 7 | calm |
| 15 | 7 | calm |
| 16 | 7 | calm |
| 17 | 7 | calm |
| 18 | 7 | calm |
| 19 | 7 | calm |
| 20 | 7 | calm |
| 21 | 7 | calm |
| 22 | 7 | calm |
| 23 | 7 | calm |
| 24 | 6 | calm |
| 25 | 6 | calm |
| 26 | 6 | calm |
| 27 | 6 | calm |
| 28 | 6 | calm |
| 29 | 6 | calm |
| 30 | 6 | calm |
| 31 | 6 | calm |
Sunrise & sunset in May
Daylight runs from about 13 h 24 min at the start of May to 14 h 06 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 42 minutes over May. Sunrise moves from 5:26 AM to 5:03 AM, and sunset from 6:48 PM to 7:11 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) | 13.4 | 13.4 | 13.4 | 13.5 | 13.5 | 13.5 | 13.6 | 13.6 | 13.6 | 13.7 | 13.7 | 13.7 | 13.7 | 13.8 | 13.8 | 13.8 | 13.8 | 13.9 | 13.9 | 13.9 | 13.9 | 14.0 | 14.0 | 14.0 | 14.0 | 14.0 | 14.1 | 14.1 | 14.1 | 14.1 | 14.1 |
| Sunrise (AM) | 5:26 | 5:24 | 5:23 | 5:22 | 5:21 | 5:20 | 5:19 | 5:18 | 5:17 | 5:17 | 5:16 | 5:15 | 5:14 | 5:13 | 5:12 | 5:12 | 5:11 | 5:10 | 5:09 | 5:09 | 5:08 | 5:07 | 5:07 | 5:06 | 5:06 | 5:05 | 5:05 | 5:04 | 5:04 | 5:03 | 5:03 |
| Sunset (PM) | 6:48 | 6:49 | 6:50 | 6:51 | 6:52 | 6:52 | 6:53 | 6:54 | 6:55 | 6:56 | 6:56 | 6:57 | 6:58 | 6:59 | 7:00 | 7:00 | 7:01 | 7:02 | 7:03 | 7:03 | 7:04 | 7:05 | 7:06 | 7:06 | 7:07 | 7:08 | 7:09 | 7:09 | 7:10 | 7:11 | 7:11 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 13.4 | 5:26 | 6:48 |
| 2 | 13.4 | 5:24 | 6:49 |
| 3 | 13.4 | 5:23 | 6:50 |
| 4 | 13.5 | 5:22 | 6:51 |
| 5 | 13.5 | 5:21 | 6:52 |
| 6 | 13.5 | 5:20 | 6:52 |
| 7 | 13.6 | 5:19 | 6:53 |
| 8 | 13.6 | 5:18 | 6:54 |
| 9 | 13.6 | 5:17 | 6:55 |
| 10 | 13.7 | 5:17 | 6:56 |
| 11 | 13.7 | 5:16 | 6:56 |
| 12 | 13.7 | 5:15 | 6:57 |
| 13 | 13.7 | 5:14 | 6:58 |
| 14 | 13.8 | 5:13 | 6:59 |
| 15 | 13.8 | 5:12 | 7:00 |
| 16 | 13.8 | 5:12 | 7:00 |
| 17 | 13.8 | 5:11 | 7:01 |
| 18 | 13.9 | 5:10 | 7:02 |
| 19 | 13.9 | 5:09 | 7:03 |
| 20 | 13.9 | 5:09 | 7:03 |
| 21 | 13.9 | 5:08 | 7:04 |
| 22 | 14.0 | 5:07 | 7:05 |
| 23 | 14.0 | 5:07 | 7:06 |
| 24 | 14.0 | 5:06 | 7:06 |
| 25 | 14.0 | 5:06 | 7:07 |
| 26 | 14.0 | 5:05 | 7:08 |
| 27 | 14.1 | 5:05 | 7:09 |
| 28 | 14.1 | 5:04 | 7:09 |
| 29 | 14.1 | 5:04 | 7:10 |
| 30 | 14.1 | 5:03 | 7:11 |
| 31 | 14.1 | 5:03 | 7:11 |
Solar energy in May
Average shortwave solar energy reaching the ground each day in May, about 6.04 kWh/m² — the sunniest month for solar.
For context, solar energy here swings from a low near 2.38 kWh/m² to a high of 6.04 kWh/m² in May across the year — May's 6.04 kWh/m² sits near the top of that range.
| 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) | 5.9 | 5.9 | 6.0 | 6.0 | 6.0 | 6.0 | 6.0 | 6.0 | 6.0 | 6.0 | 6.0 | 6.0 | 6.0 | 6.0 | 6.0 | 6.0 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.0 | 6.0 | 6.0 |
| Level | Bright | Bright | Bright | Bright | Bright | Bright | 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 | 5.9 | Bright |
| 2 | 5.9 | Bright |
| 3 | 6.0 | Bright |
| 4 | 6.0 | Bright |
| 5 | 6.0 | Bright |
| 6 | 6.0 | Bright |
| 7 | 6.0 | Intense |
| 8 | 6.0 | Intense |
| 9 | 6.0 | Intense |
| 10 | 6.0 | Intense |
| 11 | 6.0 | Intense |
| 12 | 6.0 | Intense |
| 13 | 6.0 | Intense |
| 14 | 6.0 | Intense |
| 15 | 6.0 | Intense |
| 16 | 6.0 | Intense |
| 17 | 6.1 | Intense |
| 18 | 6.1 | Intense |
| 19 | 6.1 | Intense |
| 20 | 6.1 | Intense |
| 21 | 6.1 | Intense |
| 22 | 6.1 | Intense |
| 23 | 6.1 | Intense |
| 24 | 6.1 | Intense |
| 25 | 6.1 | Intense |
| 26 | 6.1 | Intense |
| 27 | 6.1 | Intense |
| 28 | 6.1 | Intense |
| 29 | 6.0 | Intense |
| 30 | 6.0 | Intense |
| 31 | 6.0 | Intense |
Hazard calendar for Jacksonville
None of Jacksonville's seasonal hazards are active in May. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.
Jacksonville sits in the Atlantic hurricane belt; the season peaks August–October.
Is May a good time to visit Jacksonville?
Our two travel scores rate May for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
May is a reasonable time to visit Jacksonville for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Jacksonville in May
From May's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In May, Jacksonville sees daytime highs around 79°F and nights near 61°F. Pack sun protection. Worth having: light clothes and rain gear. About 11 days see rain.
Sea temperature near Jacksonville in May
The nearest coast averages about 70°F in May — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 19 mi away) is warmest in August at about 82°F and coldest in February near 58°F.
It's comfortable for a long swim from May 6 to Nov 13 — about 6.3 months when the water holds above 68°F.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°F) | 60 | 58 | 60 | 64 | 70 | 77 | 81 | 82 | 80 | 74 | 67 | 63 |
| Comfort | Cool | Bracing | Cool | Cool | Refreshing | Warm | Warm | Warm | Warm | Refreshing | Cool | Cool |
| Sea temperature (°F) | Comfort | |
|---|---|---|
| Jan | 60 | Cool |
| Feb | 58 | Bracing |
| Mar | 60 | Cool |
| Apr | 64 | Cool |
| May | 70 | Refreshing |
| Jun | 77 | Warm |
| Jul | 81 | Warm |
| Aug | 82 | Warm |
| Sep | 80 | Warm |
| Oct | 74 | Refreshing |
| Nov | 67 | Cool |
| Dec | 63 | Cool |
UV index in Jacksonville in May
Clear-sky midday UV in May peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Jacksonville peaks around July 14 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 2 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 3 | 4 | 6 | 7 | 8 | 9 | 9 | 8 | 7 | 5 | 4 | 2 |
| Level | Moderate | Moderate | High | Very high | Very high | Very high | Very high | Very high | Very high | Moderate | Moderate | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 3 | Moderate |
| Feb | 4 | Moderate |
| Mar | 6 | High |
| Apr | 7 | Very high |
| May | 8 | Very high |
| Jun | 9 | Very high |
| Jul | 9 | Very high |
| Aug | 8 | Very high |
| Sep | 7 | Very high |
| Oct | 5 | Moderate |
| Nov | 4 | Moderate |
| Dec | 2 | Moderate |
Air quality in Jacksonville in May
Average fine-particle pollution (PM2.5) through the year — so you can see where May falls, not just the annual average.
Air quality in Jacksonville is worst in March — around 21 µg/m³ PM2.5 (moderate), about 3.3× the cleanest month (December, 6 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 8 | 13 | 21 | 14 | 13 | 17 | 17 | 14 | 10 | 8 | 7 | 6 |
| Level | Good | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 8 | Good |
| Feb | 13 | Moderate |
| Mar | 21 | Moderate |
| Apr | 14 | Moderate |
| May | 13 | Moderate |
| Jun | 17 | Moderate |
| Jul | 17 | Moderate |
| Aug | 14 | Moderate |
| Sep | 10 | Good |
| Oct | 8 | Good |
| Nov | 7 | Good |
| Dec | 6 | Good |
Where is Jacksonville?
Jacksonville sits at 34.8°N, 77.4°W, 13 ft above sea level, in United States. The nearest listed city is Havelock, 31 mi away.
Topography around Jacksonville
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Jacksonville.
Within 2 miles, the terrain around Jacksonville has only modest variations in elevation — a maximum elevation change of 85 ft around an average of 26 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 246 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 289 ft.
The land around Jacksonville is covered by trees (55%) within 2 miles, trees (69%) within 10 miles, and trees (56%) and water (25%) 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 Jacksonville (34.754°, -77.4302°, elevation 13 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. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).