La Fortuna weather in August

In August, La Fortuna sees average daytime highs of 28°C and overnight lows near 21°C, with 243 mm of rain across 28.5 wet days and about 12.3 hours of daylight. It is the 5th-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 1% 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 La Fortuna's 9th-clearest and 9th-windiest month. For the whole year in context, see La Fortuna's year-round climate.

Daytime high: 28°; 5th warmest
Overnight low: 21°; 9th coldest
Rainfall: 243 mm; 28.5 wet days
Daylight: 12 h 18 min; 5:32 AM – 5:53 PM
Cloud cover: 89%; 9th clearest
Wind: 6 km/h; 9th windiest
Solar energy: 4.33 kWh/m²
Travel score: 3.5; out of 10

← July La Fortuna year-round climate September →Best places to visit in August

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

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 La Fortuna reaches about 28°C in the afternoon and slips back to 21°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 29°C. Set against its neighbours, August runs on par with July and on par with September.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Avg high (°C)	27	27	27	27	27	27	27	27	27	27	27	27	27	28	28	28	28	28	28	28	28	28	28	28	28	28	28	28	28	28	28
Avg low (°C)	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21

	Avg high (°C)	Avg low (°C)
1	27	21
2	27	21
3	27	21
4	27	21
5	27	21
6	27	21
7	27	21
8	27	21
9	27	21
10	27	21
11	27	21
12	27	21
13	27	21
14	28	21
15	28	21
16	28	21
17	28	21
18	28	21
19	28	21
20	28	21
21	28	21
22	28	21
23	28	21
24	28	21
25	28	21
26	28	21
27	28	21
28	28	21
29	28	21
30	28	21
31	28	21

La Fortuna weather by month

How August compares with the rest of the year at a glance. August is the 5th-warmest and 7th-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	26° / 19°	110	15.3	11.5	6.1
Feb	26° / 19°	54	8.1	11.7	7.1
Mar	28° / 20°	32	6.6	11.9	7.0
Apr	29° / 21°	52	10	12.2	5.5
May	28° / 21°	255	24.6	12.5	3.7
Jun	28° / 21°	304	28.8	12.6	3.3
Jul	27° / 21°	260	28.1	12.6	3.6
Aug	28° / 21°	243	28.5	12.3	3.5
Sep	28° / 21°	288	29	12.1	3.3
Oct	27° / 21°	319	29.7	11.8	3.4
Nov	26° / 20°	291	26	11.5	3.9
Dec	26° / 20°	197	21.9	11.4	4.9

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 1% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 4% of August, with mostly cloudy or overcast conditions the remaining 95%.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Clearer (%)	6	6	6	6	6	6	6	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5
Cloudier (%)	94	94	94	94	94	94	94	95	95	95	95	95	95	95	95	95	95	95	95	95	95	95	95	95	95	95	95	95	95	95	95

	Clearer (%)	Cloudier (%)
1	6	94
2	6	94
3	6	94
4	6	94
5	6	94
6	6	94
7	6	94
8	5	95
9	5	95
10	5	95
11	5	95
12	5	95
13	5	95
14	5	95
15	5	95
16	5	95
17	5	95
18	5	95
19	5	95
20	5	95
21	5	95
22	5	95
23	5	95
24	5	95
25	5	95
26	5	95
27	5	95
28	5	95
29	5	95
30	5	95
31	5	95

Chance of precipitation in August

Any precipitation

La Fortuna gets around 243 mm of rain over 28.5 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 92% and peaks near 95% on the wettest days.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Rain chance (%)	90	90	91	91	91	91	91	91	92	92	92	92	92	92	92	92	92	92	92	92	92	92	92	92	93	93	93	94	94	94	95

	Rain chance (%)
1	90
2	90
3	91
4	91
5	91
6	91
7	91
8	91
9	92
10	92
11	92
12	92
13	92
14	92
15	92
16	92
17	92
18	92
19	92
20	92
21	92
22	92
23	92
24	92
25	93
26	93
27	93
28	94
29	94
30	94
31	95

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 92% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Muggy (%)	12	11	11	11	10	10	10	9	9	9	9	9	8	8	8	8	8	8	8	7	7	7	7	6	6	6	5	5	4	4	4
Oppressive (%)	88	89	89	89	90	90	90	91	91	91	91	91	92	92	92	92	92	92	92	93	93	93	93	94	94	94	95	95	96	96	96

	Muggy (%)	Oppressive (%)
1	12	88
2	11	89
3	11	89
4	11	89
5	10	90
6	10	90
7	10	90
8	9	91
9	9	91
10	9	91
11	9	91
12	9	91
13	8	92
14	8	92
15	8	92
16	8	92
17	8	92
18	8	92
19	8	92
20	7	93
21	7	93
22	7	93
23	7	93
24	6	94
25	6	94
26	6	94
27	5	95
28	5	95
29	4	96
30	4	96
31	4	96

Wind in August

Winds average 6 km/h in August.

Across August, daily wind ranges from about 5 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Wind speed (km/h)	7	7	7	7	7	7	7	7	7	7	6	6	6	6	6	6	6	6	6	6	6	6	6	5	5	5	5	5	5	5	5
Feels	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

	Wind speed (km/h)	Feels
1	7	calm
2	7	calm
3	7	calm
4	7	calm
5	7	calm
6	7	calm
7	7	calm
8	7	calm
9	7	calm
10	7	calm
11	6	calm
12	6	calm
13	6	calm
14	6	calm
15	6	calm
16	6	calm
17	6	calm
18	6	calm
19	6	calm
20	6	calm
21	6	calm
22	6	calm
23	6	calm
24	5	calm
25	5	calm
26	5	calm
27	5	calm
28	5	calm
29	5	calm
30	5	calm
31	5	calm

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 5:31 AM to 5:32 AM, and sunset from 5:59 PM to 5:45 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Daylight (h)	12.5	12.5	12.5	12.4	12.4	12.4	12.4	12.4	12.4	12.4	12.4	12.4	12.4	12.4	12.4	12.3	12.3	12.3	12.3	12.3	12.3	12.3	12.3	12.3	12.3	12.3	12.3	12.2	12.2	12.2	12.2
Sunrise (AM)	5:31	5:31	5:31	5:31	5:31	5:31	5:31	5:32	5:32	5:32	5:32	5:32	5:32	5:32	5:32	5:32	5:32	5:32	5:32	5:32	5:32	5:32	5:32	5:32	5:32	5:32	5:32	5:32	5:32	5:32	5:32
Sunset (PM)	5:59	5:58	5:58	5:58	5:57	5:57	5:57	5:56	5:56	5:56	5:55	5:55	5:54	5:54	5:54	5:53	5:53	5:52	5:52	5:51	5:51	5:50	5:50	5:49	5:49	5:48	5:47	5:47	5:46	5:46	5:45

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	12.5	5:31	5:59
2	12.5	5:31	5:58
3	12.5	5:31	5:58
4	12.4	5:31	5:58
5	12.4	5:31	5:57
6	12.4	5:31	5:57
7	12.4	5:31	5:57
8	12.4	5:32	5:56
9	12.4	5:32	5:56
10	12.4	5:32	5:56
11	12.4	5:32	5:55
12	12.4	5:32	5:55
13	12.4	5:32	5:54
14	12.4	5:32	5:54
15	12.4	5:32	5:54
16	12.3	5:32	5:53
17	12.3	5:32	5:53
18	12.3	5:32	5:52
19	12.3	5:32	5:52
20	12.3	5:32	5:51
21	12.3	5:32	5:51
22	12.3	5:32	5:50
23	12.3	5:32	5:50
24	12.3	5:32	5:49
25	12.3	5:32	5:49
26	12.3	5:32	5:48
27	12.3	5:32	5:47
28	12.2	5:32	5:47
29	12.2	5:32	5:46
30	12.2	5:32	5:46
31	12.2	5:32	5:45

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.33 kWh/m².

For context, solar energy here swings from a low near 3.65 kWh/m² to a high of 5.86 kWh/m² in March across the year — August's 4.33 kWh/m² falls in the middle.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Solar energy (kWh/m²)	4.2	4.2	4.2	4.2	4.3	4.3	4.3	4.3	4.3	4.3	4.3	4.3	4.3	4.3	4.3	4.3	4.3	4.3	4.3	4.3	4.4	4.4	4.4	4.4	4.4	4.4	4.4	4.4	4.4	4.4	4.4
Level	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright

	Solar energy (kWh/m²)	Level
1	4.2	Bright
2	4.2	Bright
3	4.2	Bright
4	4.2	Bright
5	4.3	Bright
6	4.3	Bright
7	4.3	Bright
8	4.3	Bright
9	4.3	Bright
10	4.3	Bright
11	4.3	Bright
12	4.3	Bright
13	4.3	Bright
14	4.3	Bright
15	4.3	Bright
16	4.3	Bright
17	4.3	Bright
18	4.3	Bright
19	4.3	Bright
20	4.3	Bright
21	4.4	Bright
22	4.4	Bright
23	4.4	Bright
24	4.4	Bright
25	4.4	Bright
26	4.4	Bright
27	4.4	Bright
28	4.4	Bright
29	4.4	Bright
30	4.4	Bright
31	4.4	Bright

Planning a trip in August

Is August a good time to visit La Fortuna?

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

3.5

Sightseeing

9th-best month of the year

3.7

Beach & pool

8th-best month of the year

August is a weaker month for outdoor sightseeing in La Fortuna.

What to pack for La Fortuna in August

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

In August, La Fortuna sees daytime highs around 28°C and nights near 21°C. Pack light clothes and rain gear. About 29 days see rain.

light clothesrain gear

Sea temperature near La Fortuna 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 66 km away) is warmest in April at about 29°C and coldest in November near 28°C.

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Sea temperature (°C)	29	29	29	29	29	29	29	29	29	28	28	28
Comfort	Tropical	Tropical	Tropical	Tropical	Tropical	Tropical	Tropical	Tropical	Tropical	Tropical	Warm	Tropical

	Sea temperature (°C)	Comfort
Jan	29	Tropical
Feb	29	Tropical
Mar	29	Tropical
Apr	29	Tropical
May	29	Tropical
Jun	29	Tropical
Jul	29	Tropical
Aug	29	Tropical
Sep	29	Tropical
Oct	28	Tropical
Nov	28	Warm
Dec	28	Tropical

UV index in La Fortuna 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 La Fortuna peaks around March 17 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 at about 10 (very high).

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	11	14	14	14	13	13	12	13	13	12	11	10
Level	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Very high

	UV index (midday)	Level
Jan	11	Extreme
Feb	14	Extreme
Mar	14	Extreme
Apr	14	Extreme
May	13	Extreme
Jun	13	Extreme
Jul	12	Extreme
Aug	13	Extreme
Sep	13	Extreme
Oct	12	Extreme
Nov	11	Extreme
Dec	10	Very high

Air quality in La Fortuna 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 La Fortuna is worst in May — around 23 µg/m³ PM2.5 (moderate), about 2.5× the cleanest month (January, 10 µg/m³).

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	10	11	13	21	23	21	22	20	18	15	12	10
Level	Good	Good	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Good	Good

	PM2.5 (µg/m³)	Level
Jan	10	Good
Feb	11	Good
Mar	13	Moderate
Apr	21	Moderate
May	23	Moderate
Jun	21	Moderate
Jul	22	Moderate
Aug	20	Moderate
Sep	18	Moderate
Oct	15	Moderate
Nov	12	Good
Dec	10	Good

Location & terrain

Where is La Fortuna?

La Fortuna sits at 10.5°N, 84.6°W, 0 m above sea level, in Costa Rica. The nearest listed city is Monteverde, 26 km away.

Topography around La Fortuna

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

Within 3 km, the terrain around La Fortuna has significant variations in elevation — a maximum elevation change of 281 m around an average of 270 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,738 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,891 m.

The land around La Fortuna is covered by grassland (55%) and trees (42%) within 3 km, trees (63%) and grassland (35%) within 16 km, and trees (63%) and grassland (26%) within 80 km.

3 km

281 m

grassland 55%

16 km

1,738 m

trees 63%

80 km

2,891 m

trees 63%

treesgrasslandcroplandartificial surfaceswatermangroves

← July La Fortuna year-round climate September →Best places to visit in August

August weather nearby: Monteverde 26 km · Quesada 28 km · San_Ramon_ 47 km · Cañas 50 km · Esparza 53 km · Chacarita 56 km · Puntarenas 59 km · El Castillo 67 km

Costa Rica travel facts

Travel advisory: Level 2; Exercise Increased Caution
Power plugs: Type A / B; 120 V · 60 Hz
Prices: ≈ 59% of US; price level, 2025
GDP per capita: $19,970; 2025
Happiness: 7.4 / 10; World Happiness, 2025
Safe drinking water: 81%; of population, 2024
Homicide rate: 17.7; per 100k, 2023
Road deaths: 14.8; per 100k/yr, 2019
Income group: High; World Bank
English: Moderate; EF EPI 516
Religion

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 La Fortuna (10.4709°, -84.6453°, 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. 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).

	Avg high (°C)	Avg low (°C)
1	27	21
2	27	21
3	27	21
4	27	21
5	27	21
6	27	21
7	27	21
8	27	21
9	27	21
10	27	21
11	27	21
12	27	21
13	27	21
14	28	21
15	28	21
16	28	21
17	28	21
18	28	21
19	28	21
20	28	21
21	28	21
22	28	21
23	28	21
24	28	21
25	28	21
26	28	21
27	28	21
28	28	21
29	28	21
30	28	21
31	28	21

	Clearer (%)	Cloudier (%)
1	6	94
2	6	94
3	6	94
4	6	94
5	6	94
6	6	94
7	6	94
8	5	95
9	5	95
10	5	95
11	5	95
12	5	95
13	5	95
14	5	95
15	5	95
16	5	95
17	5	95
18	5	95
19	5	95
20	5	95
21	5	95
22	5	95
23	5	95
24	5	95
25	5	95
26	5	95
27	5	95
28	5	95
29	5	95
30	5	95
31	5	95

	Rain chance (%)
1	90
2	90
3	91
4	91
5	91
6	91
7	91
8	91
9	92
10	92
11	92
12	92
13	92
14	92
15	92
16	92
17	92
18	92
19	92
20	92
21	92
22	92
23	92
24	92
25	93
26	93
27	93
28	94
29	94
30	94
31	95

	Muggy (%)	Oppressive (%)
1	12	88
2	11	89
3	11	89
4	11	89
5	10	90
6	10	90
7	10	90
8	9	91
9	9	91
10	9	91
11	9	91
12	9	91
13	8	92
14	8	92
15	8	92
16	8	92
17	8	92
18	8	92
19	8	92
20	7	93
21	7	93
22	7	93
23	7	93
24	6	94
25	6	94
26	6	94
27	5	95
28	5	95
29	4	96
30	4	96
31	4	96

	Avg high (°C)	Avg low (°C)
1	27	21
2	27	21
3	27	21
4	27	21
5	27	21
6	27	21
7	27	21
8	27	21
9	27	21
10	27	21
11	27	21
12	27	21
13	27	21
14	28	21
15	28	21
16	28	21
17	28	21
18	28	21
19	28	21
20	28	21
21	28	21
22	28	21
23	28	21
24	28	21
25	28	21
26	28	21
27	28	21
28	28	21
29	28	21
30	28	21
31	28	21

	Clearer (%)	Cloudier (%)
1	6	94
2	6	94
3	6	94
4	6	94
5	6	94
6	6	94
7	6	94
8	5	95
9	5	95
10	5	95
11	5	95
12	5	95
13	5	95
14	5	95
15	5	95
16	5	95
17	5	95
18	5	95
19	5	95
20	5	95
21	5	95
22	5	95
23	5	95
24	5	95
25	5	95
26	5	95
27	5	95
28	5	95
29	5	95
30	5	95
31	5	95

	Rain chance (%)
1	90
2	90
3	91
4	91
5	91
6	91
7	91
8	91
9	92
10	92
11	92
12	92
13	92
14	92
15	92
16	92
17	92
18	92
19	92
20	92
21	92
22	92
23	92
24	92
25	93
26	93
27	93
28	94
29	94
30	94
31	95

	Muggy (%)	Oppressive (%)
1	12	88
2	11	89
3	11	89
4	11	89
5	10	90
6	10	90
7	10	90
8	9	91
9	9	91
10	9	91
11	9	91
12	9	91
13	8	92
14	8	92
15	8	92
16	8	92
17	8	92
18	8	92
19	8	92
20	7	93
21	7	93
22	7	93
23	7	93
24	6	94
25	6	94
26	6	94
27	5	95
28	5	95
29	4	96
30	4	96
31	4	96

	Avg high (°C)	Avg low (°C)
1	27	21
2	27	21
3	27	21
4	27	21
5	27	21
6	27	21
7	27	21
8	27	21
9	27	21
10	27	21
11	27	21
12	27	21
13	27	21
14	28	21
15	28	21
16	28	21
17	28	21
18	28	21
19	28	21
20	28	21
21	28	21
22	28	21
23	28	21
24	28	21
25	28	21
26	28	21
27	28	21
28	28	21
29	28	21
30	28	21
31	28	21

	Clearer (%)	Cloudier (%)
1	6	94
2	6	94
3	6	94
4	6	94
5	6	94
6	6	94
7	6	94
8	5	95
9	5	95
10	5	95
11	5	95
12	5	95
13	5	95
14	5	95
15	5	95
16	5	95
17	5	95
18	5	95
19	5	95
20	5	95
21	5	95
22	5	95
23	5	95
24	5	95
25	5	95
26	5	95
27	5	95
28	5	95
29	5	95
30	5	95
31	5	95

	Rain chance (%)
1	90
2	90
3	91
4	91
5	91
6	91
7	91
8	91
9	92
10	92
11	92
12	92
13	92
14	92
15	92
16	92
17	92
18	92
19	92
20	92
21	92
22	92
23	92
24	92
25	93
26	93
27	93
28	94
29	94
30	94
31	95

	Muggy (%)	Oppressive (%)
1	12	88
2	11	89
3	11	89
4	11	89
5	10	90
6	10	90
7	10	90
8	9	91
9	9	91
10	9	91
11	9	91
12	9	91
13	8	92
14	8	92
15	8	92
16	8	92
17	8	92
18	8	92
19	8	92
20	7	93
21	7	93
22	7	93
23	7	93
24	6	94
25	6	94
26	6	94
27	5	95
28	5	95
29	4	96
30	4	96
31	4	96