Boynton Beach weather in May

In May, Boynton Beach sees average daytime highs of 82°F and overnight lows near 74°F, with 4.1 in of rain across 12.7 wet days and about 13.3 hours of daylight. It is the 6th-warmest and 6th-wettest month of the year here.

Day-to-day highs hold fairly steady near 82°F through the month. The sky is clear or mostly clear about 41% of the time in May, and the air most often feels oppressive.

Daylight stretches from about 13 hours at the start of May to 13 h 30 min by month's end. Set against the rest of the year, May is Boynton Beach's 2nd-clearest and 8th-windiest month. For the whole year in context, see Boynton Beach's year-round climate.

Daytime high
82°
6th warmest
Overnight low
74°
7th coldest
Rainfall
4.1 in
12.7 wet days
Daylight
13 h 18 min
5:38 AM – 6:55 PM
Cloud cover
50%
2nd clearest
Wind
9 mph
8th windiest
Solar energy
6.25 kWh/m²
Travel score
5.9
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 May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 82°F through the month.

A typical May day in Boynton Beach reaches about 82°F in the afternoon and slips back to 74°F overnight — a 8°F spread between the day's warmth and the night's chill. On most days the high lands between 79°F and 86°F. Set against its neighbours, May runs about 3°F warmer than April and about 3°F cooler than June.

70°80°90°151015202531
Avg high (°F)Avg low (°F)
18172
28173
38173
48173
58173
68173
78173
88173
98273
108274
118274
128274
138274
148274
158274
168274
178274
188274
198275
208275
218275
228375
238375
248375
258375
268376
278376
288376
298376
308376
318376

How May really feels in Boynton Beach

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.

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

May 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 May compares with the rest of the year at a glance. May is the 6th-warmest and 6th-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 May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 41% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 22% of May, with mostly cloudy or overcast conditions the remaining 37%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16832
26832
36931
46931
57030
67030
77030
87030
97030
106931
116931
126931
136733
146733
156634
166436
176436
186337
196139
206139
216040
226040
235941
245842
255842
265743
275644
285446
295347
305149
315050

Chance of precipitation in May

Any precipitation

Boynton Beach gets around 4.1 in of rain over 12.7 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 43% and peaks near 62% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
132
231
331
431
530
630
731
831
932
1033
1134
1235
1337
1438
1540
1642
1744
1845
1947
2048
2149
2250
2351
2452
2553
2654
2756
2857
2958
3060
3162

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

Most of May feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, May lands in the oppressive band about 47% of days. Sticky, muggy-or-worse air turns up on roughly 83% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
13102037290
23101938300
33101938300
43101839310
52101839310
6291740320
7291740330
8281640330
9181641340
10171541350
11171541360
12161441380
13151441390
14151341410
15041340430
16041239450
17031238470
18021137490
19021136510
20011035540
21011034541
2201932571
2301831591
2401729621
2500728632
2600626662
2700525673
2800523684
2900421705
3000320716
3100318727

Wind in May

Winds average 9 mph in May.

Across May, daily wind ranges from about 8 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
49light breeze
59light breeze
69light breeze
79light breeze
89light breeze
99light breeze
109light breeze
119light breeze
129light breeze
139light breeze
149light breeze
159light breeze
169light breeze
179light breeze
189light breeze
199light breeze
209light breeze
219light breeze
229light breeze
239light breeze
249light breeze
259light breeze
269light breeze
278light breeze
288light breeze
298light breeze
308light breeze
318light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 hours at the start of May to 13 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 30 minutes over May. Sunrise moves from 5:48 AM to 5:32 AM, and sunset from 6:47 PM to 7:03 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.05:486:47
213.05:476:48
313.05:466:48
413.15:456:49
513.15:456:49
613.15:446:50
713.15:436:50
813.15:426:51
913.25:426:52
1013.25:416:52
1113.25:406:53
1213.25:406:53
1313.25:396:54
1413.35:396:54
1513.35:386:55
1613.35:386:55
1713.35:376:56
1813.35:376:57
1913.45:366:57
2013.45:366:58
2113.45:356:58
2213.45:356:59
2313.45:346:59
2413.45:347:00
2513.45:347:00
2613.55:337:01
2713.55:337:01
2813.55:337:02
2913.55:327:02
3013.55:327:03
3113.55:327:03

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 6.25 kWh/m² — the sunniest month for solar.

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 — May's 6.25 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.3Intense
26.3Intense
36.3Intense
46.3Intense
56.3Intense
66.3Intense
76.3Intense
86.4Intense
96.4Intense
106.3Intense
116.3Intense
126.3Intense
136.3Intense
146.3Intense
156.3Intense
166.2Intense
176.2Intense
186.2Intense
196.2Intense
206.1Intense
216.1Intense
226.1Intense
236.1Intense
246.0Intense
256.0Intense
266.0Intense
276.0Bright
286.0Bright
295.9Bright
305.9Bright
315.9Bright
Planning a trip in May

Hazard calendar for Boynton Beach

In seasonPeak

In May, Boynton Beach sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

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 May a good time to visit Boynton Beach?

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

5.9
Sightseeing
7th-best month of the year
6.4
Beach & pool
4th-best month of the year

May is a reasonable time to visit Boynton Beach for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Boynton Beach in May

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

In May, Boynton Beach sees daytime highs around 82°F and nights near 74°F. Pack light clothes and sun protection. Worth having: rain gear. About 13 days see rain.

light clothessun protectionrain gear

Sea temperature near Boynton Beach in May

The nearest coast averages about 81°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 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 May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 10 (very high — sun protection essential). 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 May

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where May 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
May 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).