San Juan del Sur weather in August

In August, San Juan del Sur sees average daytime highs of 28°C and overnight lows near 25°C, with 168 mm of rain across 26.4 wet days and about 12.4 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 10% of the time in August, and the air most often feels oppressive.

Daylight stretches from about 12 h 30 min at the start of August to 12 h 12 min by month's end. Set against the rest of the year, August is San Juan del Sur's 8th-clearest and 8th-windiest month. For the whole year in context, see San Juan del Sur's year-round climate.

Daytime high
28°
5th warmest
Overnight low
25°
9th coldest
Rainfall
168 mm
26.4 wet days
Daylight
12 h 24 min
5:36 AM – 5:59 PM
Cloud cover
76%
8th clearest
Wind
20 km/h
8th windiest
Solar energy
5.73 kWh/m²
Travel score
3.6
out of 10

San Juan del Sur is Town in Nicaragua, Seat of the San Juan del Sur Municipality, Rivas Department.

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

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 San Juan del Sur reaches about 28°C in the afternoon and slips back to 25°C overnight — a 3°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)
12825
22825
32825
42825
52825
62825
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 San Juan del Sur

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.

San Juan del Sur 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
Jan27° / 24°103.411.48.0
Feb28° / 24°41.411.68.2
Mar29° / 24°30.911.97.4
Apr30° / 25°143.112.26.2
May29° / 26°15316.312.54.4
Jun28° / 25°19826.512.63.4
Jul28° / 25°15125.812.63.7
Aug28° / 25°16826.412.43.6
Sep28° / 25°25227.212.13.4
Oct28° / 25°29027.411.73.8
Nov28° / 25°10215.411.55.6
Dec27° / 24°246.311.47.3

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 10% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 13% of August, with mostly cloudy or overcast conditions the remaining 76%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12377
22476
32476
42476
52476
62575
72575
82476
92476
102476
112476
122377
132377
142377
152377
162476
172476
182476
192278
202377
212377
222377
232377
242377
252476
262377
272476
282476
292476
302377
312476

Chance of precipitation in August

Any precipitation

San Juan del Sur gets around 168 mm of rain over 26.4 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 85% and peaks near 87% on the wettest days.

0%20%40%60%80%100%151015202531
Rain chance (%)
182
282
382
482
583
683
783
883
984
1084
1185
1285
1385
1486
1586
1686
1786
1887
1987
2087
2187
2287
2387
2487
2587
2687
2787
2887
2987
3087
3187

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 78% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
17723
27723
37624
47624
57525
67525
77525
87525
97525
107525
117525
127624
137624
147723
157822
167822
177921
188020
198020
208119
218119
228119
238020
248020
258020
268020
277921
287921
297921
307822
317822

Wind in August

Winds average 20 km/h in August.

Across August, daily wind ranges from about 16 km/h on the calmest days to 23 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
123breezy
223breezy
323breezy
422breezy
522breezy
622breezy
722breezy
822breezy
921breezy
1021breezy
1121breezy
1221breezy
1321breezy
1420breezy
1520breezy
1620light breeze
1720light breeze
1819light breeze
1919light breeze
2019light breeze
2118light breeze
2218light breeze
2318light breeze
2418light breeze
2517light breeze
2617light breeze
2717light breeze
2817light breeze
2916light breeze
3016light breeze
3116light breeze

Sunrise & sunset in August

DaylightNight

Daylight runs from about 12 h 30 min at the start of August to 12 h 12 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 5:35 AM to 5:37 AM, and sunset from 6:05 PM to 5:50 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.55:356:05
212.55:356:04
312.55:356:04
412.55:356:04
512.55:356:03
612.55:356:03
712.55:356:03
812.45:366:02
912.45:366:02
1012.45:366:01
1112.45:366:01
1212.45:366:01
1312.45:366:00
1412.45:366:00
1512.45:365:59
1612.45:365:59
1712.45:365:58
1812.45:365:58
1912.35:365:57
2012.35:375:57
2112.35:375:56
2212.35:375:56
2312.35:375:55
2412.35:375:55
2512.35:375:54
2612.35:375:53
2712.35:375:53
2812.35:375:52
2912.25:375:52
3012.25:375:51
3112.25:375:50

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.73 kWh/m².

For context, solar energy here swings from a low near 4.95 kWh/m² to a high of 6.93 kWh/m² in April across the year — August's 5.73 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.7Bright
25.7Bright
35.7Bright
45.7Bright
55.7Bright
65.7Bright
75.7Bright
85.7Bright
95.7Bright
105.7Bright
115.7Bright
125.7Bright
135.7Bright
145.7Bright
155.7Bright
165.7Bright
175.7Bright
185.7Bright
195.7Bright
205.7Bright
215.7Bright
225.7Bright
235.7Bright
245.7Bright
255.7Bright
265.7Bright
275.7Bright
285.7Bright
295.7Bright
305.7Bright
315.7Bright
Planning a trip in August

Hazard calendar for San Juan del Sur

In seasonPeak

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

San Juan del Sur sits in the Atlantic hurricane belt; the season peaks August–October.

San Juan del Sur'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 San Juan del Sur?

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

3.6
Sightseeing
10th-best month of the year
4.2
Beach & pool
9th-best month of the year

August is a weaker month for outdoor sightseeing in San Juan del Sur.

What to pack for San Juan del Sur in August

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

In August, San Juan del Sur sees daytime highs around 28°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 26 days see rain.

light clothesrain gearsun protection

Sea temperature near San Juan del Sur 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 at the nearest coast (about 14 km away) 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
Jan26Warm
Feb26Warm
Mar26Warm
Apr28Warm
May29Tropical
Jun29Tropical
Jul28Tropical
Aug29Tropical
Sep29Tropical
Oct28Tropical
Nov27Warm
Dec27Warm

UV index in San Juan del Sur in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 13 (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 Juan del Sur peaks around March 20 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highMar 20UV 14Dec 15UV 9
UV index (midday)Level
Jan11Extreme
Feb13Extreme
Mar14Extreme
Apr13Extreme
May12Extreme
Jun13Extreme
Jul12Extreme
Aug13Extreme
Sep12Extreme
Oct11Extreme
Nov10Very high
Dec9Very high

Air quality in San Juan del Sur 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 San Juan del Sur is worst in July — around 23 µg/m³ PM2.5 (moderate), about 3.8× the cleanest month (December, 6 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1622 µg/m³Dec 166 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb8Good
Mar9Good
Apr19Moderate
May21Moderate
Jun19Moderate
Jul23Moderate
Aug18Moderate
Sep13Moderate
Oct9Good
Nov6Good
Dec6Good
Location & terrain

Where is San Juan del Sur?

San Juan del Sur sits at 11.3°N, 85.9°W, 0 m above sea level, in Nicaragua. The nearest listed city is Rivas, 21 km away.

NandaimeJinotepeGranadaDiriambaMasatepeSan MarcosLiberia

Topography around San Juan del Sur

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

Within 3 km, the terrain around San Juan del Sur has only modest variations in elevation — a maximum elevation change of 234 m around an average of 39 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 430 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,874 m.

The land around San Juan del Sur is covered by trees (45%) and water (37%) within 3 km, water (46%) and trees (39%) within 16 km, and water (62%) and trees (29%) within 80 km.

3 km
234 m
16 km
430 m
80 km
1,874 m
treesgrasslandcroplandartificial surfaceswater
August weather nearby: Rivas 21 km · Nandaime 59 km · Jinotepe 75 km · Granada 76 km · Diriamba 78 km · Masatepe 79 km · San Marcos 82 km · Liberia 83 km

Nicaragua travel facts

Travel advisory
Level 3
Reconsider Travel
Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 34% of US
price level, 2025
GDP per capita
$3,173
2025
Happiness
6.3 / 10
World Happiness, 2025
Homicide rate
11.3
per 100k, 2021
Road deaths
16.9
per 100k/yr, 2019
Income group
Lower middle
World Bank
English
Moderate
EF EPI 512
Religion
Roman Catholic 45%Protestant 39%none 14%other 1%

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 Juan del Sur (11.2529°, -85.8705°, elevation 0 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).