Boynton Beach weather in December

In December, Boynton Beach sees average daytime highs of 75°F and overnight lows near 66°F, with 1.7 in of rain across 7.2 wet days and about 10.4 hours of daylight. It is the 10th-warmest and 12th-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 31% of the time in December, and the air most often feels muggy.

Daylight stretches from about 10 h 30 min at the start of December to 10 h 24 min by month's end. Set against the rest of the year, December is Boynton Beach's 6th-clearest and 6th-windiest month. For the whole year in context, see Boynton Beach's year-round climate.

Daytime high
75°
10th warmest
Overnight low
66°
3rd coldest
Rainfall
1.7 in
7.2 wet days
Daylight
10 h 18 min
7:06 AM – 5:27 PM
Cloud cover
55%
6th clearest
Wind
10 mph
6th windiest
Solar energy
3.12 kWh/m²
Travel score
7.4
out of 10

Boynton Beach is city in Palm Beach County, Florida, United States.

Density
1,730/km²
people per km²
Founded
1895

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 75°F through the month.

A typical December day in Boynton Beach reaches about 75°F in the afternoon and slips back to 66°F overnight — a 9°F spread between the day's warmth and the night's chill. On most days the high lands between 68°F and 80°F. Set against its neighbours, December runs about 3°F cooler than November and about 2°F warmer than January.

50°60°70°80°151015202531
Avg high (°F)Avg low (°F)
17668
27668
37668
47668
57668
67667
77667
87667
97667
107567
117567
127567
137567
147566
157566
167566
177566
187566
197466
207466
217466
227465
237465
247465
257465
267465
277465
287465
297465
307465
317465

How December really feels in Boynton Beach

Once humidity and wind are folded in, December 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.

Days feeling ≥ 90°F
0
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

December sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Boynton Beach weather by month

How December compares with the rest of the year at a glance. December is the 10th-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan73° / 63°2.07.510.57.3
Feb74° / 65°1.86.911.17.5
Mar76° / 67°2.5811.87.4
Apr79° / 70°2.78.612.67.0
May82° / 74°4.112.713.35.9
Jun85° / 78°6.521.913.63.9
Jul86° / 79°5.222.313.53.5
Aug86° / 79°6.32412.93.4
Sep85° / 78°6.822.612.23.7
Oct82° / 76°4.414.911.45.5
Nov78° / 70°2.28.810.77.0
Dec75° / 66°1.77.210.47.4

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 31% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 24% of December, with mostly cloudy or overcast conditions the remaining 44%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16040
26040
36040
46040
56040
66040
76139
86040
96040
105941
115842
125743
135743
145545
155545
165347
175347
185248
195149
205149
215149
225050
235149
245149
255248
265248
275347
285347
295545
305644
315644

Chance of precipitation in December

Any precipitation

Boynton Beach gets around 1.7 in of rain over 7.2 wet days in December, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 24% and peaks near 26% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
125
225
325
425
525
625
726
825
925
1025
1125
1225
1324
1424
1523
1623
1723
1823
1922
2022
2122
2222
2322
2422
2523
2623
2723
2824
2924
3024
3124

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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 31% of days. Sticky, muggy-or-worse air turns up on roughly 43% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
11315263114
21415263214
31415253214
41514253214
51514243314
61514233314
71614233314
81614223314
91714223314
101714213314
111814213314
121814213313
131915213313
141916213212
152016213212
162017213112
172017213111
182118213011
192118213010
202118212910
212119212910
22221921299
23221921299
24211921299
25211921309
26221921309
27221920309
28221820319
29231819319
30231719319
31241719328

Wind in December

Winds average 10 mph in December.

Across December, daily wind ranges from about 10 mph on the calmest days to 10 mph at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (mph)Feels
110light breeze
210light breeze
310light breeze
410light breeze
510light breeze
610light breeze
710light breeze
810light breeze
910light breeze
1010light breeze
1110light breeze
1210light breeze
1310light breeze
1410light breeze
1510light breeze
1610light breeze
1710light breeze
1810light breeze
1910light breeze
2010light breeze
2110light breeze
2210light breeze
2310light breeze
2410light breeze
2510light breeze
2610light breeze
2710light breeze
2810light breeze
2910light breeze
3010light breeze
3110light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 10 h 30 min at the start of December to 10 h 24 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 6:56 AM to 7:13 AM, and sunset from 5:24 PM to 5:34 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.56:565:24
210.46:575:24
310.46:585:24
410.46:585:24
510.46:595:24
610.47:005:24
710.47:015:24
810.47:015:24
910.47:025:25
1010.47:025:25
1110.47:035:25
1210.47:045:25
1310.47:045:26
1410.47:055:26
1510.37:065:26
1610.37:065:27
1710.37:075:27
1810.37:075:27
1910.37:085:28
2010.37:085:28
2110.37:095:29
2210.37:095:29
2310.37:105:30
2410.37:105:30
2510.37:115:31
2610.37:115:31
2710.37:115:32
2810.37:125:32
2910.37:125:33
3010.47:125:34
3110.47:135:34

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 3.12 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 3.12 kWh/m² to a high of 6.25 kWh/m² in May across the year — December's 3.12 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
13.2Moderate
23.2Moderate
33.2Moderate
43.2Moderate
53.2Moderate
63.2Moderate
73.2Moderate
83.1Moderate
93.1Moderate
103.1Moderate
113.1Moderate
123.1Moderate
133.1Moderate
143.1Moderate
153.1Moderate
163.1Moderate
173.1Moderate
183.1Moderate
193.1Moderate
203.1Moderate
213.1Moderate
223.1Moderate
233.1Moderate
243.1Moderate
253.1Moderate
263.1Moderate
273.1Moderate
283.1Moderate
293.1Moderate
303.1Moderate
313.2Moderate
Planning a trip in December

Hazard calendar for Boynton Beach

In seasonPeak

None of Boynton Beach's seasonal hazards are active in December. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Boynton Beach sits in the Atlantic hurricane belt; the season peaks August–October.

Boynton Beach's rainy season runs May–October, when most of the year's rain falls.

Atlantic hurricane
Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is December a good time to visit Boynton Beach?

Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

7.4
Sightseeing
2nd-best month of the year
6.2
Beach & pool
5th-best month of the year

December is one of the better times to visit Boynton Beach for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Boynton Beach in December

From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In December, Boynton Beach sees daytime highs around 75°F and nights near 66°F. Worth packing: light clothes. About 7 days see rain.

light clothes

Sea temperature near Boynton Beach in December

The nearest coast averages about 79°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 14 mi away) is warmest in August at about 85°F and coldest in February near 77°F.

The water stays above 68°F all year — warm enough for a swim any month.

75°80°85°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmtropicalcomfortable to swim
Sea temperature (°F)Comfort
Jan77Warm
Feb77Warm
Mar77Warm
Apr79Warm
May81Warm
Jun83Tropical
Jul85Tropical
Aug85Tropical
Sep85Tropical
Oct83Tropical
Nov81Warm
Dec79Warm

UV index in Boynton Beach in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Boynton Beach peaks around July 11 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 at about 5 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecHighVery highExtremeVery highHighModerateJul 11UV 12Dec 18UV 5
UV index (midday)Level
Jan5High
Feb7Very high
Mar9Very high
Apr9Very high
May10Very high
Jun12Extreme
Jul12Extreme
Aug11Extreme
Sep9Very high
Oct8Very high
Nov6High
Dec5Moderate

Air quality in Boynton Beach in December

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.

Air quality in Boynton Beach is worst in July — around 23 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (November, 10 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1722 µg/m³Nov 2010 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb11Good
Mar13Moderate
Apr14Moderate
May15Moderate
Jun18Moderate
Jul23Moderate
Aug19Moderate
Sep14Moderate
Oct11Good
Nov10Good
Dec10Good
Location & terrain

Where is Boynton Beach?

Boynton Beach sits at 26.5°N, 80.1°W, 20 ft above sea level, in United States. The nearest listed city is Delray Beach, 4.3 mi away.

Topography around Boynton Beach

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Boynton Beach.

Within 2 miles, the terrain around Boynton Beach has only modest variations in elevation — a maximum elevation change of 66 ft around an average of 13 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 72 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 203 ft.

The land around Boynton Beach is covered by artificial surfaces (56%) and water (21%) within 2 miles, water (46%) and artificial surfaces (28%) within 10 miles, and water (38%) and wetland (25%) within 50 miles.

2 miles
66 ft
10 miles
72 ft
50 miles
203 ft
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
December weather nearby: Delray Beach 4.3 mi · Lake Worth Beach 6.2 mi · Lake Worth Corridor 6.8 mi · Greenacres City 7.5 mi · Palm Springs 8.1 mi · Boca Raton 12 mi · West Palm Beach 13 mi · Boca Del Mar 14 mi

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
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

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 Boynton Beach (26.5253°, -80.0664°, elevation 20 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).