Tejar weather in May

In May, Tejar sees average daytime highs of 26°C and overnight lows near 19°C, with 660 mm of rain across 30.9 wet days and about 12.4 hours of daylight. It is the 4th-warmest and 6th-wettest month of the year here.

Day-to-day highs hold fairly steady near 26°C through the month. The sky is clear or mostly clear about 0% of the time in May, and the air most often feels muggy.

Daylight stretches from about 12 h 18 min at the start of May to 12 h 30 min by month's end. Set against the rest of the year, May is Tejar's 7th-clearest and 8th-windiest month. For the whole year in context, see Tejar's year-round climate.

Daytime high
26°
4th warmest
Overnight low
19°
12th coldest
Rainfall
660 mm
30.9 wet days
Daylight
12 h 24 min
5:20 AM – 5:47 PM
Cloud cover
92%
7th clearest
Wind
3 km/h
8th windiest
Solar energy
4.52 kWh/m²
Travel score
3.3
out of 10

Tejar is human settlement in Costa Rica.

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

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 26°C through the month.

A typical May day in Tejar reaches about 26°C in the afternoon and slips back to 19°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 27°C. Set against its neighbours, May runs on par with April and on par with June.

15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12619
22619
32619
42619
52619
62619
72619
82619
92619
102620
112620
122620
132620
142620
152620
162620
172620
182619
192619
202619
212619
222619
232619
242519
252519
262519
272519
282519
292519
302519
312519

Tejar weather by month

How May compares with the rest of the year at a glance. May is the 4th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan25° / 18°13622.811.55.1
Feb26° / 18°8118.111.75.5
Mar27° / 19°10321.111.95.1
Apr26° / 19°26327.512.23.9
May26° / 19°66030.912.43.3
Jun25° / 19°7203012.63.3
Jul25° / 19°7433112.53.3
Aug25° / 19°8143112.33.3
Sep25° / 19°7483012.13.3
Oct25° / 19°7503111.83.4
Nov25° / 19°54729.811.63.5
Dec25° / 18°27527.711.44.2

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 0% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 3% of May, with mostly cloudy or overcast conditions the remaining 97%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1991
2892
3793
4793
5793
6694
7595
8595
9496
10595
11595
12496
13496
14496
15496
16397
17397
18298
19199
20199
21199
22199
23199
24199
25199
260100
270100
280100
290100
300100
310100

Chance of precipitation in May

Any precipitation

Tejar gets around 660 mm of rain over 30.9 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 100% and peaks near 100% on the wettest days.

0%20%40%60%80%100%151015202531
Rain chance (%)
199
299
399
499
599
699
799
899
999
1099
1199
1299
1399
1499
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100
31100

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the muggy band about 92% of days. Sticky, muggy-or-worse air turns up on roughly 99% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)
14924
24924
33934
43925
53925
62926
72926
82926
92917
102917
111918
121918
131918
141909
151909
160919
170919
180919
190928
200928
210928
220937
230937
240946
250946
260946
270955
280955
290964
300964
310964

Wind in May

Winds average 3 km/h in May.

Across May, daily wind ranges from about 3 km/h on the calmest days to 3 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
13calm
23calm
33calm
43calm
53calm
63calm
73calm
83calm
93calm
103calm
113calm
123calm
133calm
143calm
153calm
163calm
173calm
183calm
193calm
203calm
213calm
223calm
233calm
243calm
253calm
263calm
273calm
283calm
293calm
303calm
313calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 12 h 18 min at the start of May to 12 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over May. Sunrise moves from 5:24 AM to 5:19 AM, and sunset from 5:44 PM to 5:50 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.35:245:44
212.35:245:44
312.45:235:45
412.45:235:45
512.45:235:45
612.45:225:45
712.45:225:45
812.45:225:45
912.45:215:45
1012.45:215:45
1112.45:215:46
1212.45:215:46
1312.45:205:46
1412.45:205:46
1512.45:205:46
1612.45:205:47
1712.55:205:47
1812.55:205:47
1912.55:195:47
2012.55:195:47
2112.55:195:48
2212.55:195:48
2312.55:195:48
2412.55:195:48
2512.55:195:48
2612.55:195:49
2712.55:195:49
2812.55:195:49
2912.55:195:49
3012.55:195:50
3112.55:195:50

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.52 kWh/m².

For context, solar energy here swings from a low near 3.78 kWh/m² to a high of 6.13 kWh/m² in March across the year — May's 4.52 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.1Bright
25.0Bright
35.0Bright
45.0Bright
54.9Bright
64.9Bright
74.8Bright
84.8Bright
94.7Bright
104.7Bright
114.7Bright
124.6Bright
134.6Bright
144.5Bright
154.5Bright
164.5Bright
174.4Bright
184.4Bright
194.4Bright
204.4Bright
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 May

Hazard calendar for Tejar

In seasonPeak

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

Tejar'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 May a good time to visit Tejar?

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

3.3
Sightseeing
8th-best month of the year
3.2
Beach & pool
6th-best month of the year

May is a weaker month for outdoor sightseeing in Tejar.

What to pack for Tejar in May

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

In May, Tejar sees daytime highs around 26°C and nights near 19°C. Pack rain gear. Worth having: light clothes and sun protection. About 31 days see rain.

rain gearlight clothessun protection

Sea temperature near Tejar in May

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

The sea at the nearest coast (about 43 km away) is warmest in March at about 30°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°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan29Tropical
Feb29Tropical
Mar30Tropical
Apr30Tropical
May29Tropical
Jun29Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct28Tropical
Nov28Warm
Dec28Tropical

UV index in Tejar in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May 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 Tejar peaks around March 16 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highMar 16UV 14Dec 17UV 10
UV index (midday)Level
Jan11Extreme
Feb13Extreme
Mar14Extreme
Apr13Extreme
May12Extreme
Jun13Extreme
Jul11Extreme
Aug12Extreme
Sep12Extreme
Oct11Extreme
Nov11Extreme
Dec9Very high

Air quality in Tejar in May

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Tejar 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 Tejar?

Tejar sits at 9.7°N, 84.2°W, 999 m above sea level, in Costa Rica. The nearest listed city is San Rafael Abajo, 12 km away.

San Juan de DiosSan FelipeSan Rafael ArribaSan RafaelSan MiguelPatarrá

Topography around Tejar

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

Within 3 km, the terrain around Tejar has large variations in elevation — a maximum elevation change of 1,074 m around an average of 900 m above sea level; within 16 km, extreme variations in elevation — a maximum elevation change of 2,461 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,470 m.

The land around Tejar is covered by trees (54%) and grassland (46%) within 3 km, trees (77%) and grassland (22%) within 16 km, and trees (58%) and water (27%) within 80 km.

3 km
1,074 m
16 km
2,461 m
80 km
3,470 m
treesgrasslandcroplandartificial surfaceswater
May weather nearby: San Rafael Abajo 12 km · Aserrí 20 km · San Juan de Dios 22 km · San Felipe 23 km · San Rafael Arriba 23 km · San Rafael 23 km · San Miguel 24 km · Patarrá 26 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 Tejar (9.743°, -84.2322°, elevation 999 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).