Antioch weather in May

In May, Antioch sees average daytime highs of 76°F and overnight lows near 54°F, with 0.6 in of rain across 3 wet days and about 14 hours of daylight. It is the 5th-warmest and 8th-wettest month of the year here.

Highs climb over the month, from about 75°F in the first days to 78°F by the end. The sky is clear or mostly clear about 59% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 36 min at the start of May to 14 h 24 min by month's end. Set against the rest of the year, May is Antioch's 6th-clearest and 3rd-windiest month. For the whole year in context, see Antioch's year-round climate.

Daytime high
76°
5th warmest
Overnight low
54°
8th coldest
Rainfall
0.6 in
3 wet days
Daylight
14 hours
5:02 AM – 7:05 PM
Cloud cover
35%
6th clearest
Wind
8 mph
3rd windiest
Solar energy
7.33 kWh/m²
Travel score
8.5
out of 10

Antioch is city in California, United States.

Density
1,417/km²
people per km²
Founded
1872

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 75°F in the first days to 78°F by the end.

A typical May day in Antioch reaches about 76°F in the afternoon and slips back to 54°F overnight — a 22°F spread between the day's warmth and the night's chill. On most days the high lands between 67°F and 87°F. Set against its neighbours, May runs about 6°F warmer than April and about 5°F cooler than June.

40°60°80°151015202531
Avg high (°F)Avg low (°F)
17453
27553
37553
47553
57553
67553
77553
87553
97553
107553
117553
127654
137654
147654
157654
167654
177654
187654
197654
207655
217755
227755
237755
247755
257755
267855
277855
287855
297855
307856
317956

Antioch weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan57° / 43°3.799.74.2
Feb61° / 45°3.58.810.55.2
Mar66° / 48°2.78.311.76.4
Apr70° / 50°1.24.7137.6
May76° / 54°0.63148.5
Jun82° / 57°0.10.714.68.3
Jul84° / 59°0.00.214.47.7
Aug84° / 59°0.10.213.57.7
Sep82° / 58°0.00.312.38.3
Oct76° / 54°0.92.8118.6
Nov65° / 47°1.85.49.96.6
Dec57° / 43°3.48.49.44.3

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 59% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 14% of May, with mostly cloudy or overcast conditions the remaining 26%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16931
26931
37030
47030
57030
67030
77129
87129
97129
107129
117129
127129
137228
147228
157228
167327
177327
187426
197426
207525
217525
227525
237723
247723
257723
267822
277822
287921
297921
307921
317921

Chance of precipitation in May

Any precipitation

Antioch gets around 0.6 in of rain over 3 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 9% and peaks near 11% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
111
211
311
410
510
610
710
810
910
1010
1110
1210
1310
1410
1510
1610
1710
1810
1910
209
219
229
239
248
258
267
277
286
296
306
316

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the dry band about 93% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19550
29550
39550
49550
59550
69550
79640
89640
99640
109640
119640
129640
139640
149640
159550
169550
179550
189550
199460
209460
219370
229370
239280
249280
259190
2690100
2789101
2888111
2988111
3087121
3188120

Wind in May

Winds average 8 mph in May.

Across May, daily wind ranges from about 7 mph on the calmest days to 8 mph at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (mph)Feels
17calm
27light breeze
37light breeze
48light breeze
58light breeze
68light breeze
78light breeze
88light breeze
98light breeze
108light breeze
118light breeze
128light 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 36 min at the start of May to 14 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 48 minutes over May. Sunrise moves from 5:18 AM to 4:52 AM, and sunset from 6:51 PM to 7:17 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.65:186:51
213.65:176:52
313.65:156:53
413.75:146:54
513.75:136:55
613.75:126:56
713.85:116:57
813.85:106:58
913.85:096:59
1013.95:086:59
1113.95:077:00
1213.95:067:01
1314.05:057:02
1414.05:047:03
1514.05:037:04
1614.05:027:05
1714.15:017:06
1814.15:007:07
1914.15:007:08
2014.24:597:08
2114.24:587:09
2214.24:577:10
2314.24:577:11
2414.34:567:12
2514.34:557:13
2614.34:557:13
2714.34:547:14
2814.44:547:15
2914.44:537:16
3014.44:537:16
3114.44:527:17

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 7.33 kWh/m².

For context, solar energy here swings from a low near 2.16 kWh/m² to a high of 8.13 kWh/m² in June across the year — May's 7.33 kWh/m² falls in the middle.

02468151015202531
Solar energy (kWh/m²)Level
16.9Intense
27.0Intense
37.0Intense
47.0Intense
57.0Intense
67.1Intense
77.1Intense
87.1Intense
97.2Intense
107.2Intense
117.2Intense
127.2Intense
137.3Intense
147.3Intense
157.3Intense
167.3Intense
177.3Intense
187.4Intense
197.4Intense
207.4Intense
217.5Intense
227.5Intense
237.5Intense
247.5Intense
257.6Intense
267.6Intense
277.6Intense
287.7Intense
297.7Intense
307.7Intense
317.8Intense
Planning a trip in May

Is May a good time to visit Antioch?

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

8.5
Sightseeing
2nd-best month of the year
7.4
Beach & pool
5th-best month of the year

May is one of the better times to visit Antioch for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Antioch in May

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

In May, Antioch sees daytime highs around 76°F and nights near 54°F. Pack sun protection. Worth having: light clothes. About 3 days see rain.

sun protectionlight clothes

UV index in Antioch in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Antioch peaks around June 23 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateJun 23UV 10Dec 15UV 2
UV index (midday)Level
Jan2Moderate
Feb4Moderate
Mar4Moderate
Apr6High
May8Very high
Jun10Very high
Jul10Very high
Aug10Very high
Sep6High
Oct5High
Nov2Moderate
Dec2Low

Air quality in Antioch 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 Antioch is worst in August — around 27 µg/m³ PM2.5 (moderate), about 3.6× the cleanest month (June, 8 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateAug 2126 µg/m³Jun 138 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb14Moderate
Mar15Moderate
Apr12Good
May9Good
Jun8Good
Jul11Good
Aug27Moderate
Sep23Moderate
Oct17Moderate
Nov19Moderate
Dec14Moderate
Location & terrain

Where is Antioch?

Antioch sits at 38.0°N, 121.8°W, 43 ft above sea level, in United States. The nearest listed city is Pittsburg, 4.3 mi away.

Topography around Antioch

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

Within 2 miles, the terrain around Antioch has only modest variations in elevation — a maximum elevation change of 253 ft around an average of 59 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 3,501 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 4,452 ft.

The land around Antioch is covered by artificial surfaces (54%) within 2 miles, grassland (43%) within 10 miles, and grassland (33%) and trees (23%) within 50 miles.

2 miles
253 ft
10 miles
3,501 ft
50 miles
4,452 ft
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
May weather nearby: Pittsburg 4.3 mi · Oakley 5.0 mi · Brentwood 8.1 mi · Bay Point 8.7 mi · Concord 12 mi · Pleasant Hill 14 mi · Walnut Creek 16 mi · Danville 17 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 Antioch (38.0049°, -121.8058°, elevation 43 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).