Schertz weather in May

In May, Schertz sees average daytime highs of 86°F and overnight lows near 67°F, with 4.3 in of rain across 11.2 wet days and about 13.5 hours of daylight. It is the 5th-warmest and 1st-wettest month of the year here.

Highs climb over the month, from about 83°F in the first days to 89°F by the end. The sky is clear or mostly clear about 33% of the time in May, and the air most often feels muggy.

Daylight stretches from about 13 h 06 min at the start of May to 13 h 42 min by month's end. Set against the rest of the year, May is Schertz's 9th-clearest and 2nd-windiest month. For the whole year in context, see Schertz's year-round climate.

Daytime high
86°
5th warmest
Overnight low
67°
8th coldest
Rainfall
4.3 in
11.2 wet days
Daylight
13 h 30 min
5:45 AM – 7:14 PM
Cloud cover
55%
9th clearest
Wind
8 mph
2nd windiest
Solar energy
5.75 kWh/m²
Travel score
4.9
out of 10

Schertz is city in Guadalupe, Bexar, and Comal counties, Texas, United States.

Density
519/km²
people per km²
Founded
1843

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

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 83°F in the first days to 89°F by the end.

A typical May day in Schertz reaches about 86°F in the afternoon and slips back to 67°F overnight — a 19°F spread between the day's warmth and the night's chill. On most days the high lands between 79°F and 93°F. Set against its neighbours, May runs about 6°F warmer than April and about 5°F cooler than June.

50°60°70°80°90°151015202531
Avg high (°F)Avg low (°F)
18364
28364
38364
48464
58465
68465
78465
88465
98566
108566
118566
128566
138567
148567
158567
168667
178667
188668
198668
208768
218769
228769
238769
248869
258869
268870
278870
288970
298970
308971
318971

How May really feels in Schertz

Once humidity and wind are folded in, May averages 10 days that feel above 90°F and 0 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F
10
heat index over the day's high
Days feeling ≤ 32°F
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.

Schertz weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan62° / 43°2.3710.35.9
Feb67° / 47°2.27.210.96.5
Mar73° / 53°3.0911.87.0
Apr80° / 60°3.08.612.76.8
May86° / 67°4.311.213.54.9
Jun91° / 73°2.89.713.93.6
Jul94° / 74°2.06.913.73.0
Aug95° / 75°2.06.313.12.7
Sep89° / 70°3.08.912.24.3
Oct81° / 61°3.37.711.36.8
Nov71° / 51°2.77.310.57.1
Dec64° / 44°2.57.710.16.1

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 33% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 20% of May, with mostly cloudy or overcast conditions the remaining 48%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14852
24753
34753
44753
54654
64654
74654
84753
94753
104753
114852
124951
134951
145149
155149
165248
175347
185347
195446
205347
215446
225545
235545
245644
255743
265842
275941
285941
296139
306139
316337

Chance of precipitation in May

Any precipitation

Schertz gets around 4.3 in of rain over 11.2 wet days in May, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 35% and peaks near 36% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
132
233
333
434
534
635
735
835
935
1035
1135
1235
1335
1435
1535
1635
1735
1835
1936
2036
2136
2236
2336
2436
2536
2636
2736
2836
2935
3035
3134

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 44% of days. Sticky, muggy-or-worse air turns up on roughly 67% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
126101935100
225101835110
32491836120
42391837130
52281838140
62181839140
71981840150
81881840160
91781841160
101681841170
111581842180
121381842180
131281843190
141181844190
151081844200
16981745200
17981746210
18871646220
19771647230
20661548240
21661548250
22561449260
23451450270
24351351280
25341251300
26241251310
27231152320
28131151340
29131050351
30121050361
31121049371

Wind in May

Winds average 8 mph in May.

Across May, daily wind ranges from about 8 mph on the calmest days to 9 mph at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (mph)Feels
19light breeze
29light breeze
39light breeze
49light breeze
59light breeze
69light breeze
79light breeze
89light breeze
99light breeze
109light breeze
119light breeze
129light breeze
138light breeze
148light breeze
158light breeze
168light breeze
178light breeze
188light breeze
198light breeze
208light breeze
218light breeze
228light breeze
238light breeze
248light breeze
258light breeze
268light breeze
278light breeze
288light breeze
298light breeze
308light breeze
318light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 06 min at the start of May to 13 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 36 minutes over May. Sunrise moves from 5:57 AM to 5:38 AM, and sunset from 7:04 PM to 7:23 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.15:577:04
213.25:567:05
313.25:557:05
413.25:547:06
513.25:537:07
613.35:527:07
713.35:517:08
813.35:517:09
913.35:507:09
1013.35:497:10
1113.45:487:10
1213.45:487:11
1313.45:477:12
1413.45:467:12
1513.55:467:13
1613.55:457:14
1713.55:447:14
1813.55:447:15
1913.55:437:16
2013.65:437:16
2113.65:427:17
2213.65:427:17
2313.65:417:18
2413.65:417:19
2513.65:407:19
2613.75:407:20
2713.75:407:20
2813.75:397:21
2913.75:397:22
3013.75:397:22
3113.75:387:23

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.75 kWh/m².

For context, solar energy here swings from a low near 2.71 kWh/m² to a high of 6.69 kWh/m² in July across the year — May's 5.75 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
155.8Bright
165.8Bright
175.8Bright
185.8Bright
195.8Bright
205.8Bright
215.9Bright
225.9Bright
235.9Bright
245.9Bright
256.0Bright
266.0Intense
276.0Intense
286.0Intense
296.1Intense
306.1Intense
316.2Intense
Planning a trip in May

Is May a good time to visit Schertz?

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

4.9
Sightseeing
8th-best month of the year
6.7
Beach & pool
3rd-best month of the year

May is a reasonable time to visit Schertz for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Schertz in May

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

In May, Schertz sees daytime highs around 86°F and nights near 67°F. Pack light clothes. Worth having: rain gear and sun protection. About 11 days see rain.

light clothesrain gearsun protection

UV index in Schertz in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Schertz peaks around August 11 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 4 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateAug 11UV 11Dec 20UV 4
UV index (midday)Level
Jan4Moderate
Feb6High
Mar7Very high
Apr10Very high
May10Extreme
Jun11Extreme
Jul11Extreme
Aug11Extreme
Sep9Very high
Oct6High
Nov5High
Dec4Moderate

Air quality in Schertz 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 Schertz is worst in July — around 18 µg/m³ PM2.5 (moderate), about 2.8× the cleanest month (October, 6 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1317 µg/m³Oct 246 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb7Good
Mar9Good
Apr10Good
May15Moderate
Jun15Moderate
Jul18Moderate
Aug12Good
Sep10Good
Oct6Good
Nov6Good
Dec7Good
Location & terrain

Where is Schertz?

Schertz sits at 29.6°N, 98.3°W, 712 ft above sea level, in United States. The nearest listed city is Universal City, 1.2 mi away.

Topography around Schertz

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Schertz.

Within 2 miles, the terrain around Schertz has only modest variations in elevation — a maximum elevation change of 180 ft around an average of 732 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 581 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,821 ft.

The land around Schertz is covered by grassland (32%), trees (30%) and artificial surfaces (30%) within 2 miles, trees (32%) and grassland (31%) within 10 miles, and trees (47%) and grassland (43%) within 50 miles.

2 miles
180 ft
10 miles
581 ft
50 miles
1,821 ft
treesgrasslandcroplandartificial surfacesbare terrain
May weather nearby: Universal City 1.2 mi · Cibolo 2.5 mi · Converse 3.7 mi · Live Oak 4.3 mi · New Braunfels 14 mi · San Antonio 16 mi · Seguin 19 mi · Canyon Lake 22 mi

United States travel facts

Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 100% of US
price level, 2025
GDP per capita
$90,027
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
5.8
per 100k, 2023
Road deaths
12.7
per 100k/yr, 2019
Income group
High
World Bank
Religion
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

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 Schertz (29.5522°, -98.2697°, elevation 712 ft), 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).