Alajuela weather in July

In July, Alajuela sees average daytime highs of 24°C and overnight lows near 18°C, with 267 mm of rain across 25 wet days and about 12.5 hours of daylight. It is the 8th-warmest and 6th-wettest month of the year here.

Day-to-day highs hold fairly steady near 24°C through the month. The sky is clear or mostly clear about 1% of the time in July, and the air most often feels humid.

Daylight stretches from about 12 h 36 min at the start of July to 12 h 30 min by month's end. Set against the rest of the year, July is Alajuela's 8th-clearest and 7th-windiest month. For the whole year in context, see Alajuela's year-round climate.

Daytime high
24°
8th warmest
Overnight low
18°
10th coldest
Rainfall
267 mm
25 wet days
Daylight
12 h 30 min
5:26 AM – 5:58 PM
Cloud cover
91%
8th clearest
Wind
6 km/h
7th windiest
Solar energy
4.24 kWh/m²
Travel score
4.3
out of 10
Air quality
Good
PM10 18 µg/m³ · 2018

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

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 24°C through the month.

A typical July day in Alajuela reaches about 24°C in the afternoon and slips back to 18°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 26°C. Set against its neighbours, July runs on par with June and on par with August.

15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12518
22518
32418
42418
52418
62418
72418
82418
92418
102418
112418
122418
132418
142418
152418
162418
172418
182418
192418
202418
212518
222518
232518
242518
252518
262518
272518
282518
292518
302518
312518

Alajuela weather by month

How July compares with the rest of the year at a glance. July is the 8th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan25° / 16°295.811.57.8
Feb25° / 16°204.111.78.0
Mar26° / 17°205.211.97.5
Apr27° / 17°6211.212.26.2
May25° / 18°33324.712.54.2
Jun25° / 18°39027.312.63.8
Jul24° / 18°2672512.54.3
Aug25° / 18°35226.412.34.0
Sep24° / 17°42428.312.13.7
Oct24° / 17°44428.811.83.8
Nov24° / 17°22421.511.54.8
Dec24° / 17°7210.811.46.9

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

Beyond those clear spells, partly cloudy skies cover about 3% of July, with mostly cloudy or overcast conditions the remaining 95%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1595
2595
3595
4595
5595
6694
7694
8694
9595
10595
11595
12595
13595
14595
15595
16496
17496
18496
19496
20496
21496
22496
23595
24496
25496
26496
27496
28496
29496
30496
31496

Chance of precipitation in July

Any precipitation

Alajuela gets around 267 mm of rain over 25 wet days in July. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 81% and peaks near 84% on the wettest days.

0%20%40%60%80%151015202531
Rain chance (%)
184
283
383
483
582
682
782
882
981
1081
1181
1281
1381
1481
1581
1681
1780
1880
1980
2080
2180
2280
2379
2479
2579
2679
2779
2879
2979
3080
3180

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the humid band about 65% of days. Sticky, muggy-or-worse air turns up on roughly 35% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)
105545
205644
315643
415742
515841
615940
716039
816138
916138
1016237
1116336
1216435
1316435
1416534
1516633
1616633
1716732
1816732
1916831
2016831
2116831
2216930
2316930
2416930
2516930
2616831
2716831
2806931
2906832
3006832
3106733

Wind in July

Winds average 6 km/h in July.

Across July, daily wind ranges from about 5 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in July

DaylightNight

Daylight runs from about 12 h 36 min at the start of July to 12 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over July. Sunrise moves from 5:23 AM to 5:29 AM, and sunset from 5:58 PM to 5:56 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.65:235:58
212.65:235:58
312.65:235:58
412.65:245:58
512.65:245:58
612.65:245:58
712.65:245:58
812.65:255:58
912.65:255:58
1012.65:255:58
1112.65:255:58
1212.55:265:58
1312.55:265:58
1412.55:265:58
1512.55:265:58
1612.55:265:58
1712.55:275:58
1812.55:275:58
1912.55:275:58
2012.55:275:58
2112.55:285:58
2212.55:285:58
2312.55:285:58
2412.55:285:58
2512.55:285:58
2612.55:295:57
2712.55:295:57
2812.55:295:57
2912.55:295:57
3012.55:295:57
3112.55:295:56

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 4.24 kWh/m².

For context, solar energy here swings from a low near 3.65 kWh/m² to a high of 5.95 kWh/m² in March across the year — July's 4.24 kWh/m² falls in the middle.

012345151015202531
Solar energy (kWh/m²)Level
14.2Bright
24.2Bright
34.2Bright
44.2Bright
54.2Bright
64.2Bright
74.2Bright
84.2Bright
94.2Bright
104.2Bright
114.2Bright
124.2Bright
134.2Bright
144.2Bright
154.2Bright
164.2Bright
174.2Bright
184.3Bright
194.3Bright
204.3Bright
214.3Bright
224.3Bright
234.3Bright
244.3Bright
254.3Bright
264.3Bright
274.3Bright
284.3Bright
294.3Bright
304.3Bright
314.3Bright
Planning a trip in July

Hazard calendar for Alajuela

In seasonPeak

In July, Alajuela sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Alajuela's rainy season runs May–November, when most of the year's rain falls.

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

Is July a good time to visit Alajuela?

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

4.3
Sightseeing
7th-best month of the year
3.8
Beach & pool
8th-best month of the year

July is a reasonable time to visit Alajuela for sightseeing.

What to pack for Alajuela in July

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

In July, Alajuela sees daytime highs around 24°C and nights near 18°C. Pack rain gear. Worth having: light clothes. About 25 days see rain.

rain gearlight clothes

Sea temperature near Alajuela in July

The nearest coast averages about 29°C in July — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 48 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.

26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan29Tropical
Feb29Tropical
Mar29Tropical
Apr29Tropical
May29Tropical
Jun29Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct28Tropical
Nov28Warm
Dec28Tropical

UV index in Alajuela in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July 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 Alajuela peaks around February 22 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 at about 10 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeFeb 22UV 14Dec 17UV 10
UV index (midday)Level
Jan11Extreme
Feb14Extreme
Mar14Extreme
Apr14Extreme
May12Extreme
Jun13Extreme
Jul12Extreme
Aug12Extreme
Sep12Extreme
Oct12Extreme
Nov11Extreme
Dec10Very high

Air quality in Alajuela in July

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Alajuela is worst in May — around 19 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (January, 9 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodMay 1718 µg/m³Jan 149 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb10Good
Mar11Good
Apr17Moderate
May19Moderate
Jun17Moderate
Jul18Moderate
Aug17Moderate
Sep16Moderate
Oct14Moderate
Nov12Good
Dec10Good
Location & terrain

Where is Alajuela?

Alajuela sits at 10.0°N, 84.2°W, 955 m above sea level, in Costa Rica. The nearest listed city is Mercedes Norte, 9.0 km away.

Topography around Alajuela

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

Within 3 km, the terrain around Alajuela has only modest variations in elevation — a maximum elevation change of 200 m around an average of 945 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 2,297 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,470 m.

The land around Alajuela is covered by artificial surfaces (48%) and trees (32%) within 3 km, trees (56%), grassland (23%) and artificial surfaces (20%) within 16 km, and trees (68%) within 80 km.

3 km
200 m
16 km
2,297 m
80 km
3,470 m
treesgrasslandcroplandartificial surfaceswater
July weather nearby: Mercedes Norte 9.0 km · San Francisco 10 km · Heredia 11 km · San Pablo 13 km · San Rafael 13 km · Colima 16 km · San Juan 16 km · San Jose 17 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
Roman Catholic 48%none 27%Evangelical and Pentecostal 20%other 3%

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 Alajuela (10.0172°, -84.2127°, elevation 955 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).