Dundalk weather in December
In December, Dundalk sees average daytime highs of 45°F and overnight lows near 35°F, with 4.3 in of precipitation across 9.6 wet days and about 9.3 hours of daylight. It is the 10th-warmest and 3rd-wettest month of the year here.
Highs ease over the month, from about 48°F in the first days to 43°F by the end. The sky is clear or mostly clear about 33% of the time in December, and the air most often feels dry.
Daylight stretches from about 9 h 24 min at the start of December to 9 h 18 min by month's end. Set against the rest of the year, December is Dundalk's 6th-clearest and 4th-windiest month. For the whole year in context, see Dundalk's year-round climate.
- Daytime high
- 45°
- 10th warmest
- Overnight low
- 35°
- 3rd coldest
- Precipitation
- 4.3 in
- 9.6 wet days
- Daylight
- 9 h 18 min
- 7:25 AM – 4:40 PM
- Cloud cover
- 59%
- 6th clearest
- Wind
- 9 mph
- 4th windiest
- Solar energy
- 1.9 kWh/m²
- Travel score
- 1.0
- out of 10
Dundalk is census-designated place in Maryland, United States.
- Density
- 1,412/km²
- people per km²
- Founded
- 1856
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in December
Highs ease over the month, from about 48°F in the first days to 43°F by the end.
A typical December day in Dundalk reaches about 45°F in the afternoon and slips back to 35°F overnight — a 10°F spread between the day's warmth and the night's chill. On most days the high lands between 34°F and 56°F. Set against its neighbours, December runs about 9°F cooler than November and about 5°F warmer than 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) | 49 | 49 | 48 | 48 | 47 | 47 | 47 | 46 | 46 | 46 | 46 | 45 | 45 | 45 | 45 | 44 | 44 | 44 | 44 | 44 | 44 | 44 | 44 | 43 | 43 | 43 | 43 | 43 | 43 | 42 | 42 |
| Avg low (°F) | 38 | 38 | 38 | 37 | 37 | 37 | 36 | 36 | 36 | 36 | 35 | 35 | 35 | 35 | 35 | 34 | 34 | 34 | 34 | 34 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 32 | 32 | 32 |
| Avg high (°F) | Avg low (°F) | |
|---|---|---|
| 1 | 49 | 38 |
| 2 | 49 | 38 |
| 3 | 48 | 38 |
| 4 | 48 | 37 |
| 5 | 47 | 37 |
| 6 | 47 | 37 |
| 7 | 47 | 36 |
| 8 | 46 | 36 |
| 9 | 46 | 36 |
| 10 | 46 | 36 |
| 11 | 46 | 35 |
| 12 | 45 | 35 |
| 13 | 45 | 35 |
| 14 | 45 | 35 |
| 15 | 45 | 35 |
| 16 | 44 | 34 |
| 17 | 44 | 34 |
| 18 | 44 | 34 |
| 19 | 44 | 34 |
| 20 | 44 | 34 |
| 21 | 44 | 33 |
| 22 | 44 | 33 |
| 23 | 44 | 33 |
| 24 | 43 | 33 |
| 25 | 43 | 33 |
| 26 | 43 | 33 |
| 27 | 43 | 33 |
| 28 | 43 | 33 |
| 29 | 43 | 32 |
| 30 | 42 | 32 |
| 31 | 42 | 32 |
How December really feels in Dundalk
Once humidity and wind are folded in, December averages 0 days that feel above 90°F and 31 that feel at or below 32°F — the comfort signal a plain temperature reading hides.
The story in December is cold — wind chill drags the overnight "feels like" below the raw low.
Dundalk weather by month
How December compares with the rest of the year at a glance. December is the 10th-warmest and 3rd-wettest month here — the current month is highlighted below.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 40° / 30° | 3.6 | 9 | 2.7 | 9.6 | 0.0 |
| Feb | 42° / 31° | 3.3 | 9.1 | 3.1 | 10.5 | 0.4 |
| Mar | 50° / 37° | 4.5 | 10.5 | 2.1 | 11.7 | 2.2 |
| Apr | 61° / 47° | 3.8 | 10.4 | 0.2 | 13 | 4.9 |
| May | 70° / 57° | 3.8 | 11 | 0 | 14.1 | 6.3 |
| Jun | 79° / 67° | 3.5 | 10.9 | 0 | 14.7 | 6.5 |
| Jul | 84° / 72° | 3.8 | 11.4 | 0 | 14.5 | 5.5 |
| Aug | 82° / 71° | 3.6 | 10.4 | 0 | 13.5 | 6.1 |
| Sep | 76° / 64° | 4.7 | 9.4 | 0 | 12.3 | 7.0 |
| Oct | 65° / 53° | 4.0 | 8.4 | 0 | 11 | 6.2 |
| Nov | 54° / 42° | 3.4 | 8.3 | 0.2 | 9.8 | 3.5 |
| Dec | 45° / 35° | 4.3 | 9.6 | 1.6 | 9.3 | 1.0 |
Cloud cover in December
The sky is clear or mostly clear about 33% of the time in December.
Beyond those clear spells, partly cloudy skies cover about 15% of December, with mostly cloudy or overcast conditions the remaining 51%.
| 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 (%) | 50 | 50 | 50 | 48 | 48 | 48 | 47 | 47 | 47 | 46 | 46 | 46 | 46 | 47 | 47 | 47 | 47 | 49 | 49 | 49 | 49 | 50 | 50 | 50 | 51 | 51 | 51 | 51 | 51 | 51 | 50 |
| Cloudier (%) | 50 | 50 | 50 | 52 | 52 | 52 | 53 | 53 | 53 | 54 | 54 | 54 | 54 | 53 | 53 | 53 | 53 | 51 | 51 | 51 | 51 | 50 | 50 | 50 | 49 | 49 | 49 | 49 | 49 | 49 | 50 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 50 | 50 |
| 2 | 50 | 50 |
| 3 | 50 | 50 |
| 4 | 48 | 52 |
| 5 | 48 | 52 |
| 6 | 48 | 52 |
| 7 | 47 | 53 |
| 8 | 47 | 53 |
| 9 | 47 | 53 |
| 10 | 46 | 54 |
| 11 | 46 | 54 |
| 12 | 46 | 54 |
| 13 | 46 | 54 |
| 14 | 47 | 53 |
| 15 | 47 | 53 |
| 16 | 47 | 53 |
| 17 | 47 | 53 |
| 18 | 49 | 51 |
| 19 | 49 | 51 |
| 20 | 49 | 51 |
| 21 | 49 | 51 |
| 22 | 50 | 50 |
| 23 | 50 | 50 |
| 24 | 50 | 50 |
| 25 | 51 | 49 |
| 26 | 51 | 49 |
| 27 | 51 | 49 |
| 28 | 51 | 49 |
| 29 | 51 | 49 |
| 30 | 51 | 49 |
| 31 | 50 | 50 |
Chance of precipitation in December
Dundalk gets around 4.3 in of rain and snow over 9.6 wet days in December. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable precipitation averages around 31% and peaks near 33% on the wettest days, and about 2 days bring snow.
| 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 | 32 | 32 | 32 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 32 | 32 | 32 | 32 | 31 | 31 | 30 | 30 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 |
| Snow chance (%) | 2 | 3 | 3 | 3 | 3 | 4 | 4 | 4 | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 5 | 5 | 5 | 6 | 6 | 6 |
| Rain chance (%) | Snow chance (%) | |
|---|---|---|
| 1 | 31 | 2 |
| 2 | 31 | 3 |
| 3 | 32 | 3 |
| 4 | 32 | 3 |
| 5 | 32 | 3 |
| 6 | 33 | 4 |
| 7 | 33 | 4 |
| 8 | 33 | 4 |
| 9 | 33 | 5 |
| 10 | 33 | 5 |
| 11 | 33 | 5 |
| 12 | 33 | 5 |
| 13 | 33 | 6 |
| 14 | 33 | 6 |
| 15 | 32 | 6 |
| 16 | 32 | 6 |
| 17 | 32 | 6 |
| 18 | 32 | 6 |
| 19 | 31 | 6 |
| 20 | 31 | 6 |
| 21 | 30 | 6 |
| 22 | 30 | 6 |
| 23 | 29 | 6 |
| 24 | 29 | 6 |
| 25 | 29 | 6 |
| 26 | 29 | 5 |
| 27 | 29 | 5 |
| 28 | 29 | 5 |
| 29 | 29 | 6 |
| 30 | 29 | 6 |
| 31 | 29 | 6 |
Humidity in December
Most of December feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, December lands in the dry band about 99% of days. It rarely turns muggy — the humid and sticky bands barely register.
| 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 (%) | 98 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 100 | 100 | 100 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 |
| Comfortable (%) | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Dry (%) | Comfortable (%) | |
|---|---|---|
| 1 | 98 | 2 |
| 2 | 99 | 1 |
| 3 | 99 | 1 |
| 4 | 99 | 1 |
| 5 | 99 | 1 |
| 6 | 99 | 1 |
| 7 | 99 | 1 |
| 8 | 99 | 1 |
| 9 | 99 | 1 |
| 10 | 99 | 1 |
| 11 | 100 | 0 |
| 12 | 100 | 0 |
| 13 | 100 | 0 |
| 14 | 99 | 1 |
| 15 | 99 | 1 |
| 16 | 99 | 1 |
| 17 | 99 | 1 |
| 18 | 99 | 1 |
| 19 | 99 | 1 |
| 20 | 99 | 1 |
| 21 | 99 | 1 |
| 22 | 99 | 1 |
| 23 | 99 | 1 |
| 24 | 99 | 1 |
| 25 | 99 | 1 |
| 26 | 99 | 1 |
| 27 | 99 | 1 |
| 28 | 99 | 1 |
| 29 | 99 | 1 |
| 30 | 99 | 1 |
| 31 | 99 | 1 |
Wind in December
Winds average 9 mph in December.
Across December, daily wind ranges from about 9 mph on the calmest days to 9 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) | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 |
| Feels | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze |
| Wind speed (mph) | Feels | |
|---|---|---|
| 1 | 9 | light breeze |
| 2 | 9 | light breeze |
| 3 | 9 | light breeze |
| 4 | 9 | light breeze |
| 5 | 9 | light breeze |
| 6 | 9 | light breeze |
| 7 | 9 | light breeze |
| 8 | 9 | light breeze |
| 9 | 9 | light breeze |
| 10 | 9 | light breeze |
| 11 | 9 | light breeze |
| 12 | 9 | light breeze |
| 13 | 9 | light breeze |
| 14 | 9 | light breeze |
| 15 | 9 | light breeze |
| 16 | 9 | light breeze |
| 17 | 9 | light breeze |
| 18 | 9 | light breeze |
| 19 | 9 | light breeze |
| 20 | 9 | light breeze |
| 21 | 9 | light breeze |
| 22 | 9 | light breeze |
| 23 | 9 | light breeze |
| 24 | 9 | light breeze |
| 25 | 9 | light breeze |
| 26 | 9 | light breeze |
| 27 | 9 | light breeze |
| 28 | 9 | light breeze |
| 29 | 9 | light breeze |
| 30 | 9 | light breeze |
| 31 | 9 | light breeze |
Sunrise & sunset in December
Daylight runs from about 9 h 24 min at the start of December to 9 h 18 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 7:13 AM to 7:31 AM, and sunset from 4:39 PM to 4:47 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) | 9.4 | 9.4 | 9.4 | 9.4 | 9.4 | 9.4 | 9.3 | 9.3 | 9.3 | 9.3 | 9.3 | 9.3 | 9.3 | 9.3 | 9.3 | 9.3 | 9.2 | 9.2 | 9.2 | 9.2 | 9.2 | 9.2 | 9.2 | 9.2 | 9.2 | 9.2 | 9.2 | 9.3 | 9.3 | 9.3 | 9.3 |
| Sunrise (AM) | 7:13 | 7:14 | 7:15 | 7:15 | 7:16 | 7:17 | 7:18 | 7:19 | 7:20 | 7:20 | 7:21 | 7:22 | 7:23 | 7:23 | 7:24 | 7:25 | 7:25 | 7:26 | 7:27 | 7:27 | 7:28 | 7:28 | 7:28 | 7:29 | 7:29 | 7:30 | 7:30 | 7:30 | 7:31 | 7:31 | 7:31 |
| Sunset (PM) | 4:39 | 4:39 | 4:39 | 4:39 | 4:39 | 4:38 | 4:38 | 4:38 | 4:39 | 4:39 | 4:39 | 4:39 | 4:39 | 4:39 | 4:39 | 4:40 | 4:40 | 4:40 | 4:41 | 4:41 | 4:42 | 4:42 | 4:43 | 4:43 | 4:44 | 4:44 | 4:45 | 4:45 | 4:46 | 4:47 | 4:47 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 9.4 | 7:13 | 4:39 |
| 2 | 9.4 | 7:14 | 4:39 |
| 3 | 9.4 | 7:15 | 4:39 |
| 4 | 9.4 | 7:15 | 4:39 |
| 5 | 9.4 | 7:16 | 4:39 |
| 6 | 9.4 | 7:17 | 4:38 |
| 7 | 9.3 | 7:18 | 4:38 |
| 8 | 9.3 | 7:19 | 4:38 |
| 9 | 9.3 | 7:20 | 4:39 |
| 10 | 9.3 | 7:20 | 4:39 |
| 11 | 9.3 | 7:21 | 4:39 |
| 12 | 9.3 | 7:22 | 4:39 |
| 13 | 9.3 | 7:23 | 4:39 |
| 14 | 9.3 | 7:23 | 4:39 |
| 15 | 9.3 | 7:24 | 4:39 |
| 16 | 9.3 | 7:25 | 4:40 |
| 17 | 9.2 | 7:25 | 4:40 |
| 18 | 9.2 | 7:26 | 4:40 |
| 19 | 9.2 | 7:27 | 4:41 |
| 20 | 9.2 | 7:27 | 4:41 |
| 21 | 9.2 | 7:28 | 4:42 |
| 22 | 9.2 | 7:28 | 4:42 |
| 23 | 9.2 | 7:28 | 4:43 |
| 24 | 9.2 | 7:29 | 4:43 |
| 25 | 9.2 | 7:29 | 4:44 |
| 26 | 9.2 | 7:30 | 4:44 |
| 27 | 9.2 | 7:30 | 4:45 |
| 28 | 9.3 | 7:30 | 4:45 |
| 29 | 9.3 | 7:31 | 4:46 |
| 30 | 9.3 | 7:31 | 4:47 |
| 31 | 9.3 | 7:31 | 4:47 |
Solar energy in December
Average shortwave solar energy reaching the ground each day in December, about 1.9 kWh/m² — the year's lowest.
For context, solar energy here swings from a low near 1.9 kWh/m² to a high of 6.07 kWh/m² in June across the year — December's 1.9 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) | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 1.9 | 1.9 | 1.9 | 1.9 | 1.9 | 1.9 | 1.9 | 1.9 | 1.9 | 1.9 | 1.9 | 1.9 | 1.9 | 1.9 | 1.9 | 1.9 | 1.9 | 1.9 | 1.9 | 1.9 | 1.9 | 1.9 | 1.9 | 1.9 | 1.9 | 1.9 |
| Level | Moderate | Moderate | Moderate | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 2.0 | Moderate |
| 2 | 2.0 | Moderate |
| 3 | 2.0 | Moderate |
| 4 | 2.0 | Dim |
| 5 | 2.0 | Dim |
| 6 | 1.9 | Dim |
| 7 | 1.9 | Dim |
| 8 | 1.9 | Dim |
| 9 | 1.9 | Dim |
| 10 | 1.9 | Dim |
| 11 | 1.9 | Dim |
| 12 | 1.9 | Dim |
| 13 | 1.9 | Dim |
| 14 | 1.9 | Dim |
| 15 | 1.9 | Dim |
| 16 | 1.9 | Dim |
| 17 | 1.9 | Dim |
| 18 | 1.9 | Dim |
| 19 | 1.9 | Dim |
| 20 | 1.9 | Dim |
| 21 | 1.9 | Dim |
| 22 | 1.9 | Dim |
| 23 | 1.9 | Dim |
| 24 | 1.9 | Dim |
| 25 | 1.9 | Dim |
| 26 | 1.9 | Dim |
| 27 | 1.9 | Dim |
| 28 | 1.9 | Dim |
| 29 | 1.9 | Dim |
| 30 | 1.9 | Dim |
| 31 | 1.9 | Dim |
Hazard calendar for Dundalk
None of Dundalk's seasonal hazards are active in December. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.
Dundalk sits in the Atlantic hurricane belt; the season peaks August–October.
Is December a good time to visit Dundalk?
Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
December is a weaker month for outdoor sightseeing in Dundalk.
What to pack for Dundalk in December
From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In December, Dundalk sees daytime highs around 45°F and nights near 35°F. Pack a warm layer. Worth having: a heavy coat and rain gear. About 10 days see rain.
Sea temperature near Dundalk in December
The nearest coast averages about 44°F in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 12 mi away) is warmest in August at about 78°F and coldest in February near 36°F.
It's comfortable for a long swim from Jun 16 to Oct 5 — about 3.7 months when the water holds above 68°F.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°F) | 38 | 36 | 40 | 47 | 58 | 68 | 76 | 78 | 74 | 65 | 53 | 44 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Refreshing | Warm | Warm | Refreshing | Cool | Bracing | Bracing |
| Sea temperature (°F) | Comfort | |
|---|---|---|
| Jan | 38 | Bracing |
| Feb | 36 | Bracing |
| Mar | 40 | Bracing |
| Apr | 47 | Bracing |
| May | 58 | Bracing |
| Jun | 68 | Refreshing |
| Jul | 76 | Warm |
| Aug | 78 | Warm |
| Sep | 74 | Refreshing |
| Oct | 65 | Cool |
| Nov | 53 | Bracing |
| Dec | 44 | Bracing |
UV index in Dundalk in December
Clear-sky midday UV in December peaks around 2. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Dundalk peaks around July 10 at about 9 (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 8 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 2 | 3 | 5 | 6 | 8 | 9 | 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 | 9 | Very high |
| Jul | 9 | Very high |
| Aug | 6 | High |
| Sep | 6 | High |
| Oct | 4 | Moderate |
| Nov | 3 | Moderate |
| Dec | 2 | Low |
Air quality in Dundalk in December
Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.
Air quality in Dundalk is worst in July — around 17 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (November, 8 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) | 10 | 12 | 13 | 13 | 15 | 16 | 17 | 14 | 12 | 9 | 8 | 10 |
| Level | Good | Good | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 10 | Good |
| Feb | 12 | Good |
| Mar | 13 | Moderate |
| Apr | 13 | Moderate |
| May | 15 | Moderate |
| Jun | 16 | Moderate |
| Jul | 17 | Moderate |
| Aug | 14 | Moderate |
| Sep | 12 | Good |
| Oct | 9 | Good |
| Nov | 8 | Good |
| Dec | 10 | Good |
Where is Dundalk?
Dundalk sits at 39.3°N, 76.5°W, 16 ft above sea level, in United States. The nearest listed city is Essex, 5.0 mi away.
Topography around Dundalk
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Dundalk.
Within 2 miles, the terrain around Dundalk has only modest variations in elevation — a maximum elevation change of 148 ft around an average of 16 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 505 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,417 ft.
The land around Dundalk is covered by artificial surfaces (40%) and water (37%) within 2 miles, trees (33%), artificial surfaces (29%) and water (29%) within 10 miles, and trees (51%) 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 Dundalk (39.2507°, -76.5205°, 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. 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).