Metapán weather in May

In May, Metapán sees average daytime highs of 32°C and overnight lows near 22°C, with 90 mm of rain across 14.6 wet days and about 12.7 hours of daylight. It is the 3rd-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 33°C in the first days to 31°C by the end. The sky is clear or mostly clear about 13% of the time in May, and the air most often feels muggy.

Daylight stretches from about 12 h 30 min at the start of May to 12 h 48 min by month's end. Set against the rest of the year, May is Metapán's 8th-clearest and 10th-windiest month. For the whole year in context, see Metapán's year-round climate.

Daytime high
32°
3rd warmest
Overnight low
22°
12th coldest
Rainfall
90 mm
14.6 wet days
Daylight
12 h 42 min
5:34 AM – 6:14 PM
Cloud cover
72%
8th clearest
Wind
6 km/h
10th windiest
Solar energy
5.53 kWh/m²
Travel score
3.4
out of 10

Metapán is district in Northern Santa Ana, El Salvador.

Density
29/km²
people per km²

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

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 33°C in the first days to 31°C by the end.

A typical May day in Metapán reaches about 32°C in the afternoon and slips back to 22°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 35°C. Set against its neighbours, May runs about 1°C cooler than April and about 2°C warmer than June.

20°25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13322
23322
33322
43322
53322
63322
73322
83322
93322
103322
113322
123322
133322
143222
153222
163222
173222
183222
193222
203222
213222
223222
233222
243222
253122
263122
273122
283121
293121
303121
313121

How May really feels in Metapán

Once humidity and wind are folded in, May averages 31 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
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in May is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Metapán weather by month

How May compares with the rest of the year at a glance. May is the 3rd-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 18°00.111.26.9
Feb31° / 19°00.111.55.9
Mar32° / 20°20.611.94.9
Apr33° / 21°174.112.33.9
May32° / 22°9014.612.73.4
Jun31° / 21°11218.712.83.5
Jul31° / 21°7714.412.83.8
Aug31° / 21°8716.912.53.5
Sep31° / 21°15220.512.13.4
Oct30° / 21°12215.411.74.4
Nov29° / 20°223.511.36.2
Dec30° / 19°30.611.26.8

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 13% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 17% of May, with mostly cloudy or overcast conditions the remaining 70%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15248
25149
34852
44753
54654
64555
74456
84258
94060
103862
113763
123664
133367
143268
152971
162971
172773
182674
192476
202476
212278
222179
232080
242080
251981
261783
271783
281684
291684
301585
311486

Chance of precipitation in May

Any precipitation

Metapán gets around 90 mm of rain over 14.6 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 47% and peaks near 63% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
129
230
331
432
533
634
735
837
938
1039
1140
1241
1343
1444
1546
1647
1748
1850
1951
2053
2154
2255
2356
2457
2558
2659
2760
2861
2962
3062
3163

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 74% of days. Sticky, muggy-or-worse air turns up on roughly 78% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
11831591
20730621
30728632
40627652
50626662
60525682
70524692
80423712
90423712
100422722
110421732
120421723
130320743
140319753
150318763
160318754
170317764
180217765
190216775
200215776
210215776
220214786
230114787
240113797
250112807
260112798
270111808
280110809
29009829
30009829
310088210

Wind in May

Winds average 6 km/h in May.

Across May, 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.

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 12 h 30 min at the start of May to 12 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 18 minutes over May. Sunrise moves from 5:40 AM to 5:32 AM, and sunset from 6:10 PM to 6:19 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.55:406:10
212.55:396:10
312.55:396:11
412.55:386:11
512.65:386:11
612.65:386:11
712.65:376:12
812.65:376:12
912.65:366:12
1012.65:366:12
1112.65:366:13
1212.65:356:13
1312.65:356:13
1412.65:356:13
1512.75:346:14
1612.75:346:14
1712.75:346:14
1812.75:346:15
1912.75:336:15
2012.75:336:15
2112.75:336:15
2212.75:336:16
2312.75:336:16
2412.75:336:16
2512.75:326:17
2612.75:326:17
2712.85:326:17
2812.85:326:18
2912.85:326:18
3012.85:326:18
3112.85:326:19

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.53 kWh/m².

For context, solar energy here swings from a low near 4.63 kWh/m² to a high of 6.22 kWh/m² in March across the year — May's 5.53 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.0Intense
26.0Bright
36.0Bright
45.9Bright
55.9Bright
65.9Bright
75.9Bright
85.8Bright
95.8Bright
105.8Bright
115.7Bright
125.7Bright
135.7Bright
145.6Bright
155.6Bright
165.6Bright
175.5Bright
185.5Bright
195.4Bright
205.4Bright
215.4Bright
225.3Bright
235.3Bright
245.3Bright
255.2Bright
265.2Bright
275.2Bright
285.1Bright
295.1Bright
305.1Bright
315.1Bright
Planning a trip in May

Hazard calendar for Metapán

In seasonPeak

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

Metapán's rainy season runs May–October, 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 Metapán?

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

3.4
Sightseeing
11th-best month of the year
5.6
Beach & pool
9th-best month of the year

May is a weaker month for outdoor sightseeing in Metapán.

What to pack for Metapán in May

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

In May, Metapán sees daytime highs around 32°C and nights near 22°C. Pack light clothes and rain gear. Worth having: sun protection. About 15 days see rain.

light clothesrain gearsun protection

UV index in Metapán 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 Metapán peaks around April 12 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 13 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 highApr 12UV 14Dec 13UV 9
UV index (midday)Level
Jan10Very high
Feb13Extreme
Mar14Extreme
Apr14Extreme
May12Extreme
Jun13Extreme
Jul13Extreme
Aug13Extreme
Sep13Extreme
Oct12Extreme
Nov9Very high
Dec9Very high

Air quality in Metapán 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 Metapán is worst in April — around 33 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (December, 16 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateApr 2133 µg/m³Dec 1716 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb18Moderate
Mar21Moderate
Apr33Moderate
May31Moderate
Jun21Moderate
Jul23Moderate
Aug20Moderate
Sep19Moderate
Oct18Moderate
Nov16Moderate
Dec16Moderate
Location & terrain

Where is Metapán?

Metapán sits at 14.3°N, 89.5°W, 471 m above sea level, in El Salvador. The nearest listed city is Esquipulas, 28 km away.

EsquipulasAsunción MitaSanta AnaChalchuapaJutiapaAguilares

Topography around Metapán

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

Within 3 km, the terrain around Metapán has only modest variations in elevation — a maximum elevation change of 230 m around an average of 520 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 2,059 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,620 m.

The land around Metapán is covered by grassland (46%) and trees (32%) within 3 km, trees (46%) and grassland (31%) within 16 km, and trees (62%) and grassland (24%) within 80 km.

3 km
230 m
16 km
2,059 m
80 km
2,620 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetland
May weather nearby: Esquipulas 28 km · Asunción Mita 28 km · Santa Ana 40 km · San Luis Jilotepeque 46 km · Chalchuapa 46 km · Jutiapa 47 km · Aguilares 50 km · Chiquimula 53 km

El Salvador travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type A / B
115 V · 60 Hz
Prices
≈ 41% of US
price level, 2025
GDP per capita
$5,767
2025
Happiness
6.6 / 10
World Happiness, 2025
Homicide rate
7.9
per 100k, 2022
Road deaths
20.9
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Moderate
EF EPI 523
Religion
Roman Catholic 44%Protestant 40%none 16%

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 Metapán (14.3333°, -89.45°, elevation 471 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. 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).