Livermore weather in May

In May, Livermore sees average daytime highs of 73°F and overnight lows near 51°F, with 0.6 in of rain across 3 wet days and about 14 hours of daylight. It is the 6th-warmest and 8th-wettest month of the year here.

Highs climb over the month, from about 72°F in the first days to 76°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 30 min at the start of May to 14 h 24 min by month's end. Set against the rest of the year, May is Livermore's 6th-clearest and 1st-windiest month. For the whole year in context, see Livermore's year-round climate.

Daytime high
73°
6th warmest
Overnight low
51°
7th coldest
Rainfall
0.6 in
3 wet days
Daylight
14 hours
5:03 AM – 7:04 PM
Cloud cover
35%
6th clearest
Wind
7 mph
1st windiest
Solar energy
7.38 kWh/m²
Travel score
8.4
out of 10

Livermore is city in Alameda County, California, United States.

Density
1,264/km²
people per km²
Founded
1869

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 72°F in the first days to 76°F by the end.

A typical May day in Livermore reaches about 73°F in the afternoon and slips back to 51°F overnight — a 22°F spread between the day's warmth and the night's chill. On most days the high lands between 64°F and 85°F. Set against its neighbours, May runs about 6°F warmer than April and about 6°F cooler than June.

40°60°80°151015202531
Avg high (°F)Avg low (°F)
17249
27250
37250
47250
57250
67250
77250
87250
97350
107350
117351
127351
137351
147351
157351
167351
177351
187351
197451
207452
217452
227452
237452
247552
257552
267553
277553
287653
297653
307653
317653

Livermore weather by month

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

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan56° / 41°3.49.49.74.0
Feb59° / 43°3.38.810.54.7
Mar63° / 45°2.68.711.75.9
Apr68° / 47°1.35.212.97.2
May73° / 51°0.63148.4
Jun80° / 55°0.20.814.68.8
Jul84° / 58°0.00.214.37.8
Aug83° / 58°0.10.313.57.8
Sep81° / 56°0.10.512.38.7
Oct74° / 52°0.82.8118.6
Nov63° / 45°1.65.6106.3
Dec56° / 41°3.18.89.44.0

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 27%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16832
26931
36931
46931
57030
67030
77030
87030
97030
107030
117030
127129
137129
147129
157228
167327
177327
187327
197327
207525
217525
227525
237723
247723
257723
267822
277822
287921
297921
308020
318020

Chance of precipitation in May

Any precipitation

Livermore 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 12% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
112
212
312
411
511
611
711
811
911
1011
1111
1211
1310
1410
1510
1610
1710
189
199
209
219
228
238
248
257
267
276
286
296
306
315

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 97% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
1982
2982
3982
4982
5982
6982
7982
8982
9982
10982
11982
12982
13982
14982
15982
16982
17982
18982
19973
20973
21973
22973
23964
24964
25964
26955
27955
28955
29946
30946
31937

Wind in May

Winds average 7 mph in May, the windiest month of the year.

Across May, daily wind ranges from about 6 mph on the calmest days to 7 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 30 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 54 minutes over May. Sunrise moves from 5:18 AM to 4:53 AM, and sunset from 6:50 PM to 7:16 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.55:186:50
213.65:176:51
313.65:166:52
413.65:156:53
513.75:146:54
613.75:126:55
713.75:116:56
813.85:106:57
913.85:096:58
1013.85:086:59
1113.95:077:00
1213.95:067:00
1313.95:057:01
1414.05:047:02
1514.05:037:03
1614.05:037:04
1714.15:027:05
1814.15:017:06
1914.15:007:07
2014.14:597:07
2114.24:597:08
2214.24:587:09
2314.24:577:10
2414.24:577:11
2514.34:567:12
2614.34:557:12
2714.34:557:13
2814.34:547:14
2914.34:547:15
3014.44:537:15
3114.44:537:16

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 7.38 kWh/m².

For context, solar energy here swings from a low near 2.25 kWh/m² to a high of 8.21 kWh/m² in June across the year — May's 7.38 kWh/m² falls in the middle.

02468151015202531
Solar energy (kWh/m²)Level
17.0Intense
27.0Intense
37.0Intense
47.1Intense
57.1Intense
67.1Intense
77.2Intense
87.2Intense
97.2Intense
107.2Intense
117.3Intense
127.3Intense
137.3Intense
147.3Intense
157.3Intense
167.4Intense
177.4Intense
187.4Intense
197.5Intense
207.5Intense
217.5Intense
227.5Intense
237.6Intense
247.6Intense
257.6Intense
267.7Intense
277.7Intense
287.7Intense
297.8Intense
307.8Intense
317.8Intense
Planning a trip in May

Is May a good time to visit Livermore?

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

8.4
Sightseeing
4th-best month of the year
6.5
Beach & pool
6th-best month of the year

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

What to pack for Livermore in May

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

In May, Livermore sees daytime highs around 73°F and nights near 51°F. Pack sun protection. Worth having: light clothes. About 3 days see rain.

sun protectionlight clothes

Sea temperature near Livermore in May

The nearest coast averages about 54°F 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 39 mi away) is warmest in August at about 59°F and coldest in April near 54°F.

The water stays below 68°F all year — cool enough that most swimmers want a wetsuit.

52°54°56°58°60°JanFebMarAprMayJunJulAugSepOctNovDecbracingcool
Sea temperature (°F)Comfort
Jan54Bracing
Feb54Bracing
Mar54Bracing
Apr54Bracing
May54Bracing
Jun55Bracing
Jul57Bracing
Aug59Bracing
Sep59Bracing
Oct58Bracing
Nov56Bracing
Dec55Bracing

UV index in Livermore 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 Livermore peaks around June 22 at about 10 (extreme) — 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 highExtremeVery highHighModerateJun 22UV 10Dec 15UV 2
UV index (midday)Level
Jan2Moderate
Feb4Moderate
Mar4Moderate
Apr7High
May8Very high
Jun10Extreme
Jul10Extreme
Aug10Very high
Sep6High
Oct5High
Nov2Moderate
Dec2Moderate

Air quality in Livermore 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 Livermore is worst in August — around 34 µg/m³ PM2.5 (moderate), about 4.9× the cleanest month (June, 7 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateAug 1832 µg/m³Jun 157 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb13Moderate
Mar13Moderate
Apr10Good
May8Good
Jun7Good
Jul9Good
Aug34Moderate
Sep16Moderate
Oct14Moderate
Nov15Moderate
Dec12Good
Location & terrain

Where is Livermore?

Livermore sits at 37.7°N, 121.8°W, 492 ft above sea level, in United States. The nearest listed city is Pleasanton, 6.2 mi away.

Topography around Livermore

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

Within 2 miles, the terrain around Livermore has only modest variations in elevation — a maximum elevation change of 259 ft around an average of 509 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 3,064 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 4,452 ft.

The land around Livermore is covered by artificial surfaces (62%) and grassland (21%) within 2 miles, grassland (67%) within 10 miles, and grassland (30%) and trees (28%) within 50 miles.

2 miles
259 ft
10 miles
3,064 ft
50 miles
4,452 ft
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
May weather nearby: Pleasanton 6.2 mi · Dublin 9.3 mi · San Ramon 13 mi · Union City 15 mi · Fremont 15 mi · Danville 16 mi · Hayward 17 mi · Castro Valley 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 Livermore (37.6819°, -121.768°, elevation 492 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. 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).