Puerto San José weather in August

In August, Puerto San José sees average daytime highs of 28°C and overnight lows near 25°C, with 217 mm of rain across 27.2 wet days and about 12.5 hours of daylight. It is the 5th-warmest and 4th-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 8% of the time in August, and the air most often feels oppressive.

Daylight stretches from about 12 h 36 min at the start of August to 12 h 18 min by month's end. Set against the rest of the year, August is Puerto San José's 10th-clearest and 10th-windiest month. For the whole year in context, see Puerto San José's year-round climate.

Daytime high
28°
5th warmest
Overnight low
25°
8th coldest
Rainfall
217 mm
27.2 wet days
Daylight
12 h 30 min
5:53 AM – 6:21 PM
Cloud cover
77%
10th clearest
Wind
7 km/h
10th windiest
Solar energy
5.74 kWh/m²
Travel score
3.5
out of 10

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 28°C through the month.

A typical August day in Puerto San José reaches about 28°C in the afternoon and slips back to 25°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 27°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
32925
42925
52925
62925
72825
82825
92825
102825
112825
122825
132825
142825
152825
162825
172825
182825
192825
202825
212825
222825
232825
242825
252825
262825
272825
282825
292825
302825
312825

How August really feels in Puerto San José

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

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

Puerto San José weather by month

How August compares with the rest of the year at a glance. August is the 5th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 24°4111.38.5
Feb28° / 24°3111.58.0
Mar29° / 25°113.711.97.1
Apr29° / 25°369.712.35.8
May29° / 25°18123.712.63.9
Jun28° / 25°28125.812.83.5
Jul29° / 25°17425.412.73.6
Aug28° / 25°21727.212.53.5
Sep28° / 25°31827.712.13.5
Oct28° / 25°28225.311.74.1
Nov28° / 24°6611.211.46.4
Dec28° / 24°11311.28.1

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 8% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 14% of August, with mostly cloudy or overcast conditions the remaining 77%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12773
22674
32575
42476
52575
62575
72476
82476
92476
102476
112377
122377
132377
142377
152377
162377
172377
182278
192278
202278
212278
222278
232278
242179
252179
262080
271981
281981
291981
301981
311882

Chance of precipitation in August

Any precipitation

Puerto San José gets around 217 mm of rain over 27.2 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 88% and peaks near 90% on the wettest days.

0%20%40%60%80%100%151015202531
Rain chance (%)
185
285
386
486
586
686
787
887
987
1087
1187
1287
1387
1487
1587
1687
1787
1888
1988
2088
2188
2288
2388
2489
2589
2689
2789
2890
2990
3090
3190

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the oppressive band about 96% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
1928
2928
3937
4937
5937
6946
7946
8946
9955
10955
11955
12955
13964
14964
15964
16964
17964
18973
19973
20973
21973
22973
23973
24973
25973
26973
27973
28973
29973
30982
31982

Wind in August

Winds average 7 km/h in August.

Across August, daily wind ranges from about 7 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 12 h 36 min at the start of August to 12 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 18 minutes over August. Sunrise moves from 5:51 AM to 5:55 AM, and sunset from 6:28 PM to 6:12 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.65:516:28
212.65:516:28
312.65:516:27
412.65:516:27
512.65:516:27
612.65:526:26
712.65:526:26
812.65:526:25
912.55:526:25
1012.55:526:24
1112.55:536:24
1212.55:536:23
1312.55:536:23
1412.55:536:22
1512.55:536:22
1612.55:536:21
1712.55:536:21
1812.45:546:20
1912.45:546:20
2012.45:546:19
2112.45:546:18
2212.45:546:18
2312.45:546:17
2412.45:546:17
2512.45:546:16
2612.35:546:15
2712.35:546:15
2812.35:556:14
2912.35:556:13
3012.35:556:13
3112.35:556:12

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.74 kWh/m².

For context, solar energy here swings from a low near 4.95 kWh/m² to a high of 6.54 kWh/m² in March across the year — August's 5.74 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.0Bright
26.0Bright
36.0Bright
45.9Bright
55.9Bright
65.9Bright
75.9Bright
85.9Bright
95.8Bright
105.8Bright
115.8Bright
125.8Bright
135.8Bright
145.8Bright
155.8Bright
165.7Bright
175.7Bright
185.7Bright
195.7Bright
205.7Bright
215.6Bright
225.6Bright
235.6Bright
245.6Bright
255.6Bright
265.6Bright
275.5Bright
285.5Bright
295.5Bright
305.5Bright
315.5Bright
Planning a trip in August

Hazard calendar for Puerto San José

In seasonPeak

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

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

Puerto San José's monsoon runs May–October, when most of the year's rain falls.

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

Is August a good time to visit Puerto San José?

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

3.5
Sightseeing
10th-best month of the year
4.1
Beach & pool
11th-best month of the year

August is a weaker month for outdoor sightseeing in Puerto San José.

What to pack for Puerto San José in August

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

In August, Puerto San José sees daytime highs around 28°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 27 days see rain.

light clothesrain gearsun protection

Sea temperature near Puerto San José in August

The nearest coast averages about 30°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 August at about 30°C and coldest in January near 28°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
Jan28Tropical
Feb28Tropical
Mar29Tropical
Apr30Tropical
May30Tropical
Jun30Tropical
Jul30Tropical
Aug30Tropical
Sep30Tropical
Oct29Tropical
Nov29Tropical
Dec29Tropical

UV index in Puerto San José in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August 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 Puerto San José peaks around March 20 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 23 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highMar 20UV 12Nov 23UV 8
UV index (midday)Level
Jan9Very high
Feb12Extreme
Mar12Extreme
Apr12Extreme
May11Extreme
Jun12Extreme
Jul11Extreme
Aug11Extreme
Sep10Very high
Oct10Very high
Nov8Very high
Dec8Very high

Air quality in Puerto San José 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 Puerto San José is worst in April — around 47 µg/m³ PM2.5 (poor), and holds fairly steady the rest of the year.

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModeratePoorApr 2046 µg/m³Jul 2030 µg/m³
PM2.5 (µg/m³)Level
Jan33Moderate
Feb34Moderate
Mar37Poor
Apr47Poor
May44Poor
Jun31Moderate
Jul30Moderate
Aug30Moderate
Sep33Moderate
Oct37Poor
Nov40Poor
Dec37Poor
Location & terrain

Where is Puerto San José?

Puerto San José sits at 13.9°N, 90.8°W, 5 m above sea level, in Guatemala. The nearest listed city is La Gomera, 31 km away.

La GomeraMasaguaEscuintlaGuazacapánSanta Lucía CotzumalguapaPalínAlotenangoSanta María de Jesús

Topography around Puerto San José

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

Within 3 km, the terrain around Puerto San José has only modest variations in elevation — a maximum elevation change of 20 m around an average of 4 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 45 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,937 m.

The land around Puerto San José is covered by water (41%) and trees (20%) within 3 km, water (49%) and cropland (23%) within 16 km, and trees (34%) and water (34%) within 80 km.

3 km
20 m
16 km
45 m
80 km
3,937 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetlandmangroves
August weather nearby: La Gomera 31 km · Masagua 31 km · Escuintla 42 km · Guazacapán 47 km · Santa Lucía Cotzumalguapa 51 km · Palín 55 km · Alotenango 63 km · Santa María de Jesús 65 km

Guatemala travel facts

Travel advisory
Level 3
Reconsider Travel
Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 43% of US
price level, 2025
GDP per capita
$6,598
2025
Happiness
6.5 / 10
World Happiness, 2025
Safe drinking water
49%
of population, 2024
Homicide rate
23.4
per 100k, 2023
Road deaths
22.9
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Moderate
EF EPI 510
Religion
Evangelical 46%Roman Catholic 42%none 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 Puerto San José (13.9222°, -90.8191°, elevation 5 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).