Fajardo weather in August

In August, Fajardo sees average daytime highs of 29°C and overnight lows near 26°C, with 146 mm of rain across 26.7 wet days and about 12.6 hours of daylight. It is the 2nd-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 29% of the time in August, and the air most often feels miserable.

Daylight stretches from about 12 h 48 min at the start of August to 12 h 24 min by month's end. Set against the rest of the year, August is Fajardo's 8th-clearest and 6th-windiest month. For the whole year in context, see Fajardo's year-round climate.

Daytime high
29°
2nd warmest
Overnight low
26°
12th coldest
Rainfall
146 mm
26.7 wet days
Daylight
12 h 36 min
6:08 AM – 6:45 PM
Cloud cover
60%
8th clearest
Wind
14 km/h
6th windiest
Solar energy
6.29 kWh/m²
Travel score
3.6
out of 10

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 29°C through the month.

A typical August day in Fajardo reaches about 29°C in the afternoon and slips back to 26°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 29°C. Set against its neighbours, August runs on par with July and on par with September.

20°23°25°28°30°151015202531
Avg high (°C)Avg low (°C)
12925
22925
32926
42926
52926
62926
72926
82926
92926
102926
112926
122926
132926
142926
152926
162926
172926
182926
192926
202926
212926
222926
232926
242926
252926
262926
272926
282926
292926
302926
312926

How August really feels in Fajardo

Once humidity and wind are folded in, August averages 31 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
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

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

Fajardo weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan26° / 23°6019115.7
Feb26° / 23°4816.511.45.9
Mar26° / 23°5817.111.95.9
Apr27° / 23°8219.712.45.2
May27° / 24°13624.212.84.4
Jun28° / 25°10823.113.14.1
Jul28° / 25°13524.7134.0
Aug29° / 26°14626.712.63.6
Sep29° / 25°17025.512.13.5
Oct28° / 25°1602611.63.7
Nov27° / 24°14023.811.14.5
Dec26° / 24°7419.910.95.4

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 29% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 23% of August, with mostly cloudy or overcast conditions the remaining 48%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15842
25842
35842
45743
55842
65743
75743
85743
95743
105743
115644
125545
135545
145446
155347
165347
175347
185248
195149
204951
214852
224753
234753
244654
254654
264654
274555
284654
294654
304555
314555

Chance of precipitation in August

Any precipitation

Fajardo gets around 146 mm of rain over 26.7 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 86% and peaks near 89% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%100%151015202531
Rain chance (%)
180
280
381
481
581
682
782
883
983
1084
1184
1285
1386
1486
1587
1687
1788
1888
1989
2089
2189
2289
2389
2489
2588
2688
2788
2887
2987
3086
3186

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the miserable band about 70% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
14060
23961
33862
43763
53664
63664
73565
83466
93367
103268
113268
123169
133169
143070
153070
162971
172971
182872
192872
202773
212773
222674
232674
242575
252575
262575
272476
282476
292476
302476
312476

Wind in August

Winds average 14 km/h in August.

Across August, daily wind ranges from about 13 km/h on the calmest days to 15 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
115light breeze
215light breeze
315light breeze
415light breeze
515light breeze
615light breeze
715light breeze
815light breeze
915light breeze
1015light breeze
1115light breeze
1215light breeze
1315light breeze
1414light breeze
1514light breeze
1614light breeze
1714light breeze
1814light breeze
1914light breeze
2014light breeze
2114light breeze
2214light breeze
2314light breeze
2414light breeze
2514light breeze
2614light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze
3113light breeze

Sunrise & sunset in August

DaylightNight

Daylight runs from about 12 h 48 min at the start of August to 12 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 24 minutes over August. Sunrise moves from 6:04 AM to 6:11 AM, and sunset from 6:54 PM to 6:34 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.86:046:54
212.86:046:53
312.86:046:53
412.86:056:52
512.86:056:52
612.86:056:51
712.86:056:51
812.76:066:50
912.76:066:50
1012.76:066:49
1112.76:076:49
1212.76:076:48
1312.76:076:47
1412.76:076:47
1512.66:086:46
1612.66:086:45
1712.66:086:45
1812.66:086:44
1912.66:096:43
2012.66:096:43
2112.56:096:42
2212.56:096:41
2312.56:106:40
2412.56:106:40
2512.56:106:39
2612.56:106:38
2712.46:106:37
2812.46:116:37
2912.46:116:36
3012.46:116:35
3112.46:116:34

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 6.29 kWh/m².

For context, solar energy here swings from a low near 4.4 kWh/m² to a high of 6.54 kWh/m² in April across the year — August's 6.29 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.4Intense
26.4Intense
36.4Intense
46.4Intense
56.4Intense
66.4Intense
76.4Intense
86.4Intense
96.4Intense
106.4Intense
116.4Intense
126.4Intense
136.3Intense
146.3Intense
156.3Intense
166.3Intense
176.3Intense
186.2Intense
196.2Intense
206.2Intense
216.2Intense
226.2Intense
236.2Intense
246.2Intense
256.1Intense
266.1Intense
276.1Intense
286.1Intense
296.1Intense
306.1Intense
316.1Intense
Planning a trip in August

Hazard calendar for Fajardo

In seasonPeak

In August, Fajardo sits inside its atlantic hurricane season. The full year is below, with each hazard's peak months called out.

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

Fajardo sees seasonal dust haze (July), heaviest in July.

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

Is August a good time to visit Fajardo?

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

3.6
Sightseeing
11th-best month of the year
4.5
Beach & pool
10th-best month of the year

August is a weaker month for outdoor sightseeing in Fajardo.

What to pack for Fajardo in August

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

In August, Fajardo sees daytime highs around 29°C and nights near 26°C. Pack light clothes, rain gear and sun protection. About 27 days see rain.

light clothesrain gearsun protection

Sea temperature near Fajardo in August

The nearest coast averages about 29°C in August — 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 29°C and coldest in February near 26°C.

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

24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan27Warm
Feb26Warm
Mar26Warm
Apr27Warm
May27Warm
Jun28Tropical
Jul28Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov28Tropical
Dec27Warm

UV index in Fajardo in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

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

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highApr 13UV 13Dec 16UV 7
UV index (midday)Level
Jan8Very high
Feb10Extreme
Mar12Extreme
Apr13Extreme
May11Extreme
Jun12Extreme
Jul11Extreme
Aug12Extreme
Sep12Extreme
Oct10Very high
Nov8Very high
Dec7High

Air quality in Fajardo in August

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Fajardo is worst in July — around 25 µg/m³ PM2.5 (moderate), about 4.7× the cleanest month (January, 5 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1125 µg/m³Jan 15 µg/m³
PM2.5 (µg/m³)Level
Jan5Good
Feb7Good
Mar7Good
Apr9Good
May14Moderate
Jun24Moderate
Jul25Moderate
Aug20Moderate
Sep15Moderate
Oct15Moderate
Nov8Good
Dec5Good
Location & terrain

Where is Fajardo?

Fajardo sits at 18.3°N, 65.7°W, 10 m above sea level, in Puerto Rico. The nearest listed city is Humacao, 27 km away.

HumacaoCarolinaTrujillo AltoCaguasGuaynaboSan JuanCatañoBayamón

Topography around Fajardo

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

Within 3 km, the terrain around Fajardo has only modest variations in elevation — a maximum elevation change of 236 m around an average of 31 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,040 m; within 80 km, large variations in elevation — a maximum elevation change of 1,022 m.

The land around Fajardo is covered by trees (48%) and artificial surfaces (26%) within 3 km, water (58%) and trees (34%) within 16 km, and water (74%) and trees (20%) within 80 km.

3 km
236 m
16 km
1,040 m
80 km
1,022 m
treesgrasslandartificial surfaceswaterwetlandmangroves
August weather nearby: Humacao 27 km · Carolina 33 km · Trujillo Alto 38 km · Caguas 43 km · Guaynabo 49 km · San Juan 50 km · Cataño 51 km · Bayamón 54 km

Puerto Rico travel facts

Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 78% of US
price level, 2025
GDP per capita
$40,620
2025
Happiness
7.0 / 10
World Happiness, 2015
Safe drinking water
99%
of population, 2024
Homicide rate
14.6
per 100k, 2023
Income group
High
World Bank
Religion
Roman Catholic 56%Protestant 33%none 7%other 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 Fajardo (18.3258°, -65.6524°, elevation 10 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).