San Pedro weather in May

In May, San Pedro sees average daytime highs of 28°C and overnight lows near 27°C, with 104 mm of rain across 14.2 wet days and about 12.8 hours of daylight. It is the 6th-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 48% of the time in May, and the air most often feels miserable.

Daylight stretches from about 12 h 36 min at the start of May to 13 hours by month's end. Set against the rest of the year, May is San Pedro's 6th-clearest and 5th-windiest month. For the whole year in context, see San Pedro's year-round climate.

Daytime high
28°
6th warmest
Overnight low
27°
9th coldest
Rainfall
104 mm
14.2 wet days
Daylight
12 h 48 min
5:23 AM – 6:13 PM
Cloud cover
47%
6th clearest
Wind
22 km/h
5th windiest
Solar energy
6.37 kWh/m²
Travel score
6.0
out of 10

San Pedro is town in Belize.

Density
245/km²
people per km²
Founded
1848

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 28°C through the month.

A typical May day in San Pedro reaches about 28°C in the afternoon and slips back to 27°C overnight — a 1°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 28°C. Set against its neighbours, May runs about 1°C warmer than April and on par with June.

20°23°25°28°30°151015202531
Avg high (°C)Avg low (°C)
12726
22726
32726
42726
52826
62826
72827
82827
92827
102827
112827
122827
132827
142827
152827
162827
172827
182827
192827
202827
212827
222827
232827
242827
252827
262827
272827
282827
292827
302827
312827

How May really feels in San Pedro

Once humidity and wind are folded in, May averages 8 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
8
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in May is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

San Pedro weather by month

How May compares with the rest of the year at a glance. May is the 6th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan26° / 24°9415.5116.3
Feb26° / 24°388.811.47.3
Mar26° / 25°357.711.97.6
Apr27° / 26°327.112.47.4
May28° / 27°10414.212.86.0
Jun28° / 27°20421.113.14.3
Jul28° / 27°14220.7134.6
Aug29° / 27°18022.412.64.3
Sep29° / 27°21624.712.13.8
Oct28° / 26°2802311.64.4
Nov27° / 25°17918.811.25.4
Dec26° / 24°10317.410.95.9

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 48% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 17% of May, with mostly cloudy or overcast conditions the remaining 35%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17723
27723
37624
47624
57525
67426
77426
87327
97228
107129
117129
127030
136931
146832
156733
166733
176634
186535
196436
206337
216238
226040
235941
245743
255644
265347
275248
285050
294951
304753
314555

Chance of precipitation in May

Any precipitation

San Pedro gets around 104 mm of rain over 14.2 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 46% and peaks near 67% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
126
227
328
429
530
631
732
833
935
1036
1138
1240
1341
1443
1545
1646
1748
1849
1951
2053
2154
2256
2357
2459
2560
2662
2763
2864
2965
3066
3167

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the miserable band about 56% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1164647
2164548
3164548
4154549
5154549
6154549
7154549
8144649
9044649
10044649
11044749
12044750
13034750
14034651
15034651
16024652
17024553
18024454
19024355
20024256
21024058
22023959
23023761
24023662
25023464
26013267
27013168
28012970
29012772
30012673
31012574

Wind in May

Winds average 22 km/h in May.

Across May, daily wind ranges from about 22 km/h on the calmest days to 23 km/h at its breeziest. It stays fairly steady from day to day.

0102030151015202531
Wind speed (km/h)Feels
123breezy
223breezy
323breezy
423breezy
523breezy
623breezy
723breezy
823breezy
923breezy
1023breezy
1123breezy
1223breezy
1323breezy
1423breezy
1522breezy
1622breezy
1722breezy
1822breezy
1922breezy
2022breezy
2122breezy
2222breezy
2322breezy
2422breezy
2522breezy
2622breezy
2722breezy
2822breezy
2922breezy
3022breezy
3122breezy

Sunrise & sunset in May

DaylightNight

Daylight runs from about 12 h 36 min at the start of May to 13 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 24 minutes over May. Sunrise moves from 5:30 AM to 5:20 AM, and sunset from 6:08 PM to 6:19 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.65:306:08
212.75:296:09
312.75:296:09
412.75:286:09
512.75:286:09
612.75:276:10
712.75:276:10
812.75:266:10
912.85:266:11
1012.85:256:11
1112.85:256:12
1212.85:246:12
1312.85:246:12
1412.85:246:13
1512.85:236:13
1612.85:236:13
1712.95:236:14
1812.95:226:14
1912.95:226:14
2012.95:226:15
2112.95:216:15
2212.95:216:15
2312.95:216:16
2412.95:216:16
2512.95:216:17
2612.95:206:17
2713.05:206:17
2813.05:206:18
2913.05:206:18
3013.05:206:18
3113.05:206:19

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 6.37 kWh/m².

For context, solar energy here swings from a low near 4.05 kWh/m² to a high of 6.57 kWh/m² in April across the year — May's 6.37 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.6Intense
26.6Intense
36.6Intense
46.6Intense
56.6Intense
66.6Intense
76.6Intense
86.5Intense
96.5Intense
106.5Intense
116.5Intense
126.5Intense
136.5Intense
146.4Intense
156.4Intense
166.4Intense
176.3Intense
186.3Intense
196.3Intense
206.3Intense
216.3Intense
226.2Intense
236.2Intense
246.2Intense
256.1Intense
266.1Intense
276.0Intense
286.0Intense
296.0Bright
306.0Bright
315.9Bright
Planning a trip in May

Hazard calendar for San Pedro

In seasonPeak

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

San Pedro sits in the Atlantic hurricane belt; the season peaks August–October.

San Pedro's rainy season runs June–November, 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 San Pedro?

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

6.0
Sightseeing
5th-best month of the year
6.3
Beach & pool
4th-best month of the year

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

What to pack for San Pedro in May

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

In May, San Pedro sees daytime highs around 28°C and nights near 27°C. Pack light clothes, rain gear and sun protection. Worth having: a windbreaker. About 14 days see rain.

light clothesrain gearsun protectiona windbreaker

Sea temperature near San Pedro in May

The nearest coast averages about 28°C in May — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in September at about 30°C and coldest in January near 27°C.

The water stays above 20°C all year — warm enough for a swim any month.

26°28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan27Warm
Feb27Warm
Mar27Warm
Apr28Warm
May28Tropical
Jun29Tropical
Jul29Tropical
Aug29Tropical
Sep30Tropical
Oct29Tropical
Nov28Tropical
Dec27Warm

UV index in San Pedro in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in San Pedro peaks around April 11 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 at about 7 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highApr 11UV 13Dec 16UV 7
UV index (midday)Level
Jan8Very high
Feb11Extreme
Mar12Extreme
Apr13Extreme
May11Extreme
Jun13Extreme
Jul12Extreme
Aug12Extreme
Sep12Extreme
Oct10Extreme
Nov8Very high
Dec7Very high

Air quality in San Pedro 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 San Pedro is worst in July — around 31 µg/m³ PM2.5 (moderate), about 5.0× the cleanest month (December, 6 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1131 µg/m³Dec 116 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb10Good
Mar9Good
Apr14Moderate
May19Moderate
Jun30Moderate
Jul31Moderate
Aug22Moderate
Sep14Moderate
Oct9Good
Nov6Good
Dec6Good
Location & terrain

Where is San Pedro?

San Pedro sits at 17.9°N, 88.0°W, 4 m above sea level, in Belize. The nearest listed city is Caye Caulker, 21 km away.

Caye CaulkerBelize CityCrooked TreeOrange WalkChetumalDangrigaBelmopan

Topography around San Pedro

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of San Pedro.

Within 3 km, the terrain around San Pedro has only modest variations in elevation — a maximum elevation change of 9 m around an average of 0 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 12 m; within 80 km, only modest variations in elevation — a maximum elevation change of 93 m.

The land around San Pedro is covered by water (79%) within 3 km, water (94%) within 16 km, and water (63%) within 80 km.

3 km
9 m
16 km
12 m
80 km
93 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetlandmangroves
May weather nearby: Caye Caulker 21 km · Belize City 52 km · Crooked Tree 63 km · Orange Walk 66 km · Chetumal 76 km · Bacalar 96 km · Dangriga 109 km · Belmopan 112 km

Belize travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type A / B / G
110 / 220 V · 60 Hz
Prices
≈ 53% of US
price level, 2025
GDP per capita
$7,865
2025
Happiness
6.7 / 10
World Happiness, 2025
Homicide rate
28.1
per 100k, 2022
Road deaths
22.6
per 100k/yr, 2019
Income group
Upper middle
World Bank
Religion
Roman Catholic 40%Protestant 32%none 16%other 11%

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 San Pedro (17.916°, -87.9659°, elevation 4 m), 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).