Dover weather in June
In June, Dover sees average daytime highs of 81°F and overnight lows near 66°F, with 3.6 in of rain across 10.2 wet days and about 14.7 hours of daylight. It is the 3rd-warmest and 7th-wettest month of the year here.
Highs climb over the month, from about 78°F in the first days to 84°F by the end. The sky is clear or mostly clear about 29% of the time in June, and the air most often feels muggy.
Daylight stretches from about 14 h 30 min at the start of June to 14 h 42 min by month's end. Set against the rest of the year, June is Dover's 10th-clearest and 10th-windiest month. For the whole year in context, see Dover's year-round climate.
- Daytime high
- 81°
- 3rd warmest
- Overnight low
- 66°
- 10th coldest
- Rainfall
- 3.6 in
- 10.2 wet days
- Daylight
- 14 h 42 min
- 4:40 AM – 7:24 PM
- Cloud cover
- 60%
- 10th clearest
- Wind
- 7 mph
- 10th windiest
- Solar energy
- 6.33 kWh/m²
- Travel score
- 6.2
- out of 10
Dover is capital city of the U.S. state of Delaware and seat of Kent County.
- Density
- 648/km²
- people per km²
- Founded
- 1683
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in June
Highs climb over the month, from about 78°F in the first days to 84°F by the end.
A typical June day in Dover reaches about 81°F in the afternoon and slips back to 66°F overnight — a 15°F spread between the day's warmth and the night's chill. On most days the high lands between 73°F and 89°F. Set against its neighbours, June runs about 9°F warmer than May and about 4°F cooler than July.
| 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) | 77 | 78 | 78 | 78 | 78 | 79 | 79 | 79 | 79 | 80 | 80 | 80 | 80 | 81 | 81 | 81 | 81 | 82 | 82 | 82 | 82 | 83 | 83 | 83 | 83 | 83 | 83 | 84 | 84 | 84 |
| Avg low (°F) | 62 | 62 | 63 | 63 | 63 | 64 | 64 | 64 | 64 | 65 | 65 | 65 | 66 | 66 | 66 | 67 | 67 | 67 | 67 | 68 | 68 | 68 | 68 | 69 | 69 | 69 | 69 | 69 | 70 | 70 |
| Avg high (°F) | Avg low (°F) | |
|---|---|---|
| 1 | 77 | 62 |
| 2 | 78 | 62 |
| 3 | 78 | 63 |
| 4 | 78 | 63 |
| 5 | 78 | 63 |
| 6 | 79 | 64 |
| 7 | 79 | 64 |
| 8 | 79 | 64 |
| 9 | 79 | 64 |
| 10 | 80 | 65 |
| 11 | 80 | 65 |
| 12 | 80 | 65 |
| 13 | 80 | 66 |
| 14 | 81 | 66 |
| 15 | 81 | 66 |
| 16 | 81 | 67 |
| 17 | 81 | 67 |
| 18 | 82 | 67 |
| 19 | 82 | 67 |
| 20 | 82 | 68 |
| 21 | 82 | 68 |
| 22 | 83 | 68 |
| 23 | 83 | 68 |
| 24 | 83 | 69 |
| 25 | 83 | 69 |
| 26 | 83 | 69 |
| 27 | 83 | 69 |
| 28 | 84 | 69 |
| 29 | 84 | 70 |
| 30 | 84 | 70 |
How June really feels in Dover
Once humidity and wind are folded in, June 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.
June sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Dover weather by month
How June compares with the rest of the year at a glance. June is the 3rd-warmest and 7th-wettest month here — the current month is highlighted below.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 43° / 30° | 3.1 | 9.2 | 2.9 | 9.6 | 0.4 |
| Feb | 45° / 31° | 3.0 | 8.9 | 2.9 | 10.5 | 1.0 |
| Mar | 53° / 38° | 4.1 | 10.3 | 1.6 | 11.7 | 2.9 |
| Apr | 64° / 47° | 3.3 | 9.9 | 0.2 | 13 | 5.6 |
| May | 72° / 57° | 3.4 | 10.7 | 0 | 14.1 | 6.6 |
| Jun | 81° / 66° | 3.6 | 10.2 | 0 | 14.7 | 6.2 |
| Jul | 85° / 71° | 3.7 | 11 | 0 | 14.5 | 5.2 |
| Aug | 83° / 70° | 4.3 | 10.5 | 0 | 13.5 | 5.8 |
| Sep | 77° / 63° | 4.1 | 9.2 | 0 | 12.3 | 7.0 |
| Oct | 67° / 52° | 3.7 | 8 | 0 | 11 | 6.5 |
| Nov | 56° / 42° | 2.9 | 7.5 | 0.2 | 9.9 | 4.0 |
| Dec | 47° / 35° | 3.7 | 9.1 | 1.3 | 9.3 | 1.6 |
Cloud cover in June
The sky is clear or mostly clear about 29% of the time in June.
Beyond those clear spells, partly cloudy skies cover about 18% of June, with mostly cloudy or overcast conditions the remaining 52%.
| 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 (%) | 47 | 47 | 47 | 46 | 46 | 46 | 45 | 45 | 45 | 44 | 44 | 45 | 46 | 45 | 45 | 46 | 47 | 48 | 48 | 48 | 49 | 49 | 50 | 51 | 51 | 51 | 51 | 52 | 52 | 53 |
| Cloudier (%) | 53 | 53 | 53 | 54 | 54 | 54 | 55 | 55 | 55 | 56 | 56 | 55 | 54 | 55 | 55 | 54 | 53 | 52 | 52 | 52 | 51 | 51 | 50 | 49 | 49 | 49 | 49 | 48 | 48 | 47 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 47 | 53 |
| 2 | 47 | 53 |
| 3 | 47 | 53 |
| 4 | 46 | 54 |
| 5 | 46 | 54 |
| 6 | 46 | 54 |
| 7 | 45 | 55 |
| 8 | 45 | 55 |
| 9 | 45 | 55 |
| 10 | 44 | 56 |
| 11 | 44 | 56 |
| 12 | 45 | 55 |
| 13 | 46 | 54 |
| 14 | 45 | 55 |
| 15 | 45 | 55 |
| 16 | 46 | 54 |
| 17 | 47 | 53 |
| 18 | 48 | 52 |
| 19 | 48 | 52 |
| 20 | 48 | 52 |
| 21 | 49 | 51 |
| 22 | 49 | 51 |
| 23 | 50 | 50 |
| 24 | 51 | 49 |
| 25 | 51 | 49 |
| 26 | 51 | 49 |
| 27 | 51 | 49 |
| 28 | 52 | 48 |
| 29 | 52 | 48 |
| 30 | 53 | 47 |
Chance of precipitation in June
Dover gets around 3.6 in of rain over 10.2 wet days in June. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 34% and peaks near 36% 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 (%) | 32 | 32 | 31 | 31 | 31 | 32 | 32 | 32 | 32 | 33 | 33 | 33 | 33 | 34 | 34 | 34 | 35 | 35 | 35 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 |
| Rain chance (%) | |
|---|---|
| 1 | 32 |
| 2 | 32 |
| 3 | 31 |
| 4 | 31 |
| 5 | 31 |
| 6 | 32 |
| 7 | 32 |
| 8 | 32 |
| 9 | 32 |
| 10 | 33 |
| 11 | 33 |
| 12 | 33 |
| 13 | 33 |
| 14 | 34 |
| 15 | 34 |
| 16 | 34 |
| 17 | 35 |
| 18 | 35 |
| 19 | 35 |
| 20 | 36 |
| 21 | 36 |
| 22 | 36 |
| 23 | 36 |
| 24 | 36 |
| 25 | 36 |
| 26 | 36 |
| 27 | 36 |
| 28 | 36 |
| 29 | 36 |
| 30 | 36 |
Humidity in June
Most of June feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, June lands in the muggy band about 27% of days. Sticky, muggy-or-worse air turns up on roughly 38% 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 (%) | 37 | 35 | 34 | 33 | 32 | 31 | 30 | 28 | 27 | 26 | 24 | 23 | 21 | 20 | 18 | 17 | 16 | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 9 | 8 | 7 | 7 | 7 | 6 |
| Comfortable (%) | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 20 | 20 | 20 | 19 | 19 | 18 | 18 | 17 | 17 | 17 | 16 | 16 | 16 | 16 | 15 | 15 | 15 | 15 | 15 | 15 |
| Humid (%) | 21 | 21 | 21 | 21 | 21 | 21 | 22 | 22 | 22 | 22 | 23 | 23 | 24 | 24 | 25 | 25 | 26 | 26 | 27 | 27 | 27 | 27 | 27 | 27 | 26 | 26 | 26 | 25 | 25 | 24 |
| Muggy (%) | 19 | 20 | 21 | 22 | 22 | 23 | 23 | 24 | 24 | 24 | 25 | 25 | 26 | 26 | 27 | 28 | 28 | 29 | 29 | 30 | 30 | 31 | 31 | 32 | 32 | 33 | 33 | 33 | 32 | 33 |
| Oppressive (%) | 1 | 2 | 2 | 3 | 3 | 4 | 4 | 5 | 6 | 7 | 8 | 9 | 9 | 10 | 11 | 12 | 12 | 13 | 14 | 14 | 15 | 15 | 16 | 16 | 17 | 18 | 19 | 20 | 21 | 22 |
| Miserable (%) | 0 | 0 | 0 | 0 | 0 | 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 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|---|---|---|
| 1 | 37 | 21 | 21 | 19 | 1 | 0 |
| 2 | 35 | 21 | 21 | 20 | 2 | 0 |
| 3 | 34 | 21 | 21 | 21 | 2 | 0 |
| 4 | 33 | 21 | 21 | 22 | 3 | 0 |
| 5 | 32 | 21 | 21 | 22 | 3 | 0 |
| 6 | 31 | 21 | 21 | 23 | 4 | 0 |
| 7 | 30 | 21 | 22 | 23 | 4 | 0 |
| 8 | 28 | 21 | 22 | 24 | 5 | 0 |
| 9 | 27 | 21 | 22 | 24 | 6 | 0 |
| 10 | 26 | 21 | 22 | 24 | 7 | 0 |
| 11 | 24 | 20 | 23 | 25 | 8 | 0 |
| 12 | 23 | 20 | 23 | 25 | 9 | 0 |
| 13 | 21 | 20 | 24 | 26 | 9 | 0 |
| 14 | 20 | 19 | 24 | 26 | 10 | 0 |
| 15 | 18 | 19 | 25 | 27 | 11 | 0 |
| 16 | 17 | 18 | 25 | 28 | 12 | 0 |
| 17 | 16 | 18 | 26 | 28 | 12 | 0 |
| 18 | 15 | 17 | 26 | 29 | 13 | 0 |
| 19 | 14 | 17 | 27 | 29 | 14 | 0 |
| 20 | 13 | 17 | 27 | 30 | 14 | 0 |
| 21 | 12 | 16 | 27 | 30 | 15 | 0 |
| 22 | 11 | 16 | 27 | 31 | 15 | 0 |
| 23 | 10 | 16 | 27 | 31 | 16 | 0 |
| 24 | 9 | 16 | 27 | 32 | 16 | 0 |
| 25 | 9 | 15 | 26 | 32 | 17 | 0 |
| 26 | 8 | 15 | 26 | 33 | 18 | 0 |
| 27 | 7 | 15 | 26 | 33 | 19 | 0 |
| 28 | 7 | 15 | 25 | 33 | 20 | 0 |
| 29 | 7 | 15 | 25 | 32 | 21 | 1 |
| 30 | 6 | 15 | 24 | 33 | 22 | 1 |
Wind in June
Winds average 7 mph in June.
Across June, daily wind ranges from about 7 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 7 | 7 | 7 | 7 | 7 | 7 | 7 |
| 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 |
| 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 | 7 | calm |
| 25 | 7 | calm |
| 26 | 7 | calm |
| 27 | 7 | calm |
| 28 | 7 | calm |
| 29 | 7 | calm |
| 30 | 7 | calm |
Sunrise & sunset in June
Daylight runs from about 14 h 30 min at the start of June to 14 h 42 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 12 minutes over June. Sunrise moves from 4:43 AM to 4:43 AM, and sunset from 7:16 PM to 7:27 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) | 14.5 | 14.6 | 14.6 | 14.6 | 14.6 | 14.6 | 14.6 | 14.7 | 14.7 | 14.7 | 14.7 | 14.7 | 14.7 | 14.7 | 14.7 | 14.7 | 14.7 | 14.7 | 14.8 | 14.8 | 14.8 | 14.8 | 14.8 | 14.8 | 14.8 | 14.8 | 14.7 | 14.7 | 14.7 | 14.7 |
| Sunrise (AM) | 4:43 | 4:43 | 4:43 | 4:42 | 4:42 | 4:42 | 4:41 | 4:41 | 4:41 | 4:41 | 4:41 | 4:40 | 4:40 | 4:40 | 4:40 | 4:40 | 4:40 | 4:40 | 4:40 | 4:41 | 4:41 | 4:41 | 4:41 | 4:41 | 4:42 | 4:42 | 4:42 | 4:43 | 4:43 | 4:43 |
| Sunset (PM) | 7:16 | 7:17 | 7:17 | 7:18 | 7:19 | 7:19 | 7:20 | 7:20 | 7:21 | 7:22 | 7:22 | 7:23 | 7:23 | 7:24 | 7:24 | 7:24 | 7:25 | 7:25 | 7:25 | 7:26 | 7:26 | 7:26 | 7:27 | 7:27 | 7:27 | 7:27 | 7:27 | 7:27 | 7:27 | 7:27 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 14.5 | 4:43 | 7:16 |
| 2 | 14.6 | 4:43 | 7:17 |
| 3 | 14.6 | 4:43 | 7:17 |
| 4 | 14.6 | 4:42 | 7:18 |
| 5 | 14.6 | 4:42 | 7:19 |
| 6 | 14.6 | 4:42 | 7:19 |
| 7 | 14.6 | 4:41 | 7:20 |
| 8 | 14.7 | 4:41 | 7:20 |
| 9 | 14.7 | 4:41 | 7:21 |
| 10 | 14.7 | 4:41 | 7:22 |
| 11 | 14.7 | 4:41 | 7:22 |
| 12 | 14.7 | 4:40 | 7:23 |
| 13 | 14.7 | 4:40 | 7:23 |
| 14 | 14.7 | 4:40 | 7:24 |
| 15 | 14.7 | 4:40 | 7:24 |
| 16 | 14.7 | 4:40 | 7:24 |
| 17 | 14.7 | 4:40 | 7:25 |
| 18 | 14.7 | 4:40 | 7:25 |
| 19 | 14.8 | 4:40 | 7:25 |
| 20 | 14.8 | 4:41 | 7:26 |
| 21 | 14.8 | 4:41 | 7:26 |
| 22 | 14.8 | 4:41 | 7:26 |
| 23 | 14.8 | 4:41 | 7:27 |
| 24 | 14.8 | 4:41 | 7:27 |
| 25 | 14.8 | 4:42 | 7:27 |
| 26 | 14.8 | 4:42 | 7:27 |
| 27 | 14.7 | 4:42 | 7:27 |
| 28 | 14.7 | 4:43 | 7:27 |
| 29 | 14.7 | 4:43 | 7:27 |
| 30 | 14.7 | 4:43 | 7:27 |
Solar energy in June
Average shortwave solar energy reaching the ground each day in June, about 6.33 kWh/m² — the sunniest month for solar.
For context, solar energy here swings from a low near 1.93 kWh/m² to a high of 6.33 kWh/m² in June across the year — June's 6.33 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 6.2 | 6.2 | 6.2 | 6.2 | 6.2 | 6.2 | 6.2 | 6.2 | 6.3 | 6.3 | 6.3 | 6.3 | 6.3 | 6.3 | 6.3 | 6.3 | 6.3 | 6.3 | 6.4 | 6.4 | 6.4 | 6.4 | 6.4 | 6.4 | 6.4 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 |
| 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 | 6.2 | Intense |
| 2 | 6.2 | Intense |
| 3 | 6.2 | Intense |
| 4 | 6.2 | Intense |
| 5 | 6.2 | Intense |
| 6 | 6.2 | Intense |
| 7 | 6.2 | Intense |
| 8 | 6.2 | Intense |
| 9 | 6.3 | Intense |
| 10 | 6.3 | Intense |
| 11 | 6.3 | Intense |
| 12 | 6.3 | Intense |
| 13 | 6.3 | Intense |
| 14 | 6.3 | Intense |
| 15 | 6.3 | Intense |
| 16 | 6.3 | Intense |
| 17 | 6.3 | Intense |
| 18 | 6.3 | Intense |
| 19 | 6.4 | Intense |
| 20 | 6.4 | Intense |
| 21 | 6.4 | Intense |
| 22 | 6.4 | Intense |
| 23 | 6.4 | Intense |
| 24 | 6.4 | Intense |
| 25 | 6.4 | Intense |
| 26 | 6.5 | Intense |
| 27 | 6.5 | Intense |
| 28 | 6.5 | Intense |
| 29 | 6.5 | Intense |
| 30 | 6.5 | Intense |
Hazard calendar for Dover
In June, Dover sits inside its atlantic hurricane season. The full year is below, with each hazard's peak months called out.
Dover sits in the Atlantic hurricane belt; the season peaks August–October.
Is June a good time to visit Dover?
Our two travel scores rate June for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
June is a reasonable time to visit Dover for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Dover in June
From June's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In June, Dover sees daytime highs around 81°F and nights near 66°F. Pack light clothes and sun protection. Worth having: rain gear. About 10 days see rain.
Sea temperature near Dover in June
The nearest coast averages about 67°F in June — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 8 mi away) is warmest in August at about 76°F and coldest in February near 37°F.
It's comfortable for a long swim from Jun 19 to Oct 3 — about 3.5 months when the water holds above 68°F.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°F) | 39 | 37 | 41 | 49 | 58 | 67 | 74 | 76 | 73 | 64 | 53 | 44 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Cool | Refreshing | Warm | Refreshing | Cool | Bracing | Bracing |
| Sea temperature (°F) | Comfort | |
|---|---|---|
| Jan | 39 | Bracing |
| Feb | 37 | Bracing |
| Mar | 41 | Bracing |
| Apr | 49 | Bracing |
| May | 58 | Bracing |
| Jun | 67 | Cool |
| Jul | 74 | Refreshing |
| Aug | 76 | Warm |
| Sep | 73 | Refreshing |
| Oct | 64 | Cool |
| Nov | 53 | Bracing |
| Dec | 44 | Bracing |
UV index in Dover in June
Clear-sky midday UV in June 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 Dover peaks around July 10 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 2 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 2 | 3 | 5 | 6 | 8 | 8 | 9 | 6 | 6 | 4 | 3 | 2 |
| Level | Low | Moderate | Moderate | High | Very high | Very high | Very high | High | High | Moderate | Moderate | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Low |
| Feb | 3 | Moderate |
| Mar | 5 | Moderate |
| Apr | 6 | High |
| May | 8 | Very high |
| Jun | 8 | Very high |
| Jul | 9 | Very high |
| Aug | 6 | High |
| Sep | 6 | High |
| Oct | 4 | Moderate |
| Nov | 3 | Moderate |
| Dec | 2 | Low |
Air quality in Dover in June
Average fine-particle pollution (PM2.5) through the year — so you can see where June falls, not just the annual average.
Air quality in Dover is worst in July — around 16 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (November, 7 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) | 9 | 11 | 12 | 12 | 13 | 15 | 16 | 13 | 10 | 8 | 7 | 8 |
| Level | Good | Good | Good | Good | Moderate | Moderate | Moderate | Moderate | Good | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 9 | Good |
| Feb | 11 | Good |
| Mar | 12 | Good |
| Apr | 12 | Good |
| May | 13 | Moderate |
| Jun | 15 | Moderate |
| Jul | 16 | Moderate |
| Aug | 13 | Moderate |
| Sep | 10 | Good |
| Oct | 8 | Good |
| Nov | 7 | Good |
| Dec | 8 | Good |
Where is Dover?
Dover sits at 39.2°N, 75.5°W, 30 ft above sea level, in United States. The nearest listed city is Middletown, 22 mi away.
Topography around Dover
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Dover.
Within 2 miles, the terrain around Dover has only modest variations in elevation — a maximum elevation change of 131 ft around an average of 39 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 174 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 761 ft.
The land around Dover is covered by trees (41%), artificial surfaces (29%) and grassland (21%) within 2 miles, trees (30%) and cropland (26%) within 10 miles, and trees (39%), water (27%) and cropland (20%) 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 Dover (39.1582°, -75.5244°, elevation 30 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).