San Lorenzo weather in June

In June, San Lorenzo sees average daytime highs of 73°F and overnight lows near 54°F, with 0.1 in of rain across 0.9 wet days and about 14.6 hours of daylight. It is the 4th-warmest and 9th-wettest month of the year here.

Highs climb over the month, from about 71°F in the first days to 74°F by the end. The sky is clear or mostly clear about 76% of the time in June, and the air most often feels dry.

Daylight stretches from about 14 h 24 min at the start of June to 14 h 36 min by month's end. Set against the rest of the year, June is San Lorenzo's 4th-clearest and 1st-windiest month. For the whole year in context, see San Lorenzo's year-round climate.

Daytime high
73°
4th warmest
Overnight low
54°
9th coldest
Rainfall
0.1 in
0.9 wet days
Daylight
14 h 36 min
4:51 AM – 7:26 PM
Cloud cover
25%
4th clearest
Wind
8 mph
1st windiest
Solar energy
7.84 kWh/m²
Travel score
9.0
out of 10

San Lorenzo is census-designated place in Alameda County, California.

Density
3,269/km²
people per km²

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

Temperature in June

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 71°F in the first days to 74°F by the end.

A typical June day in San Lorenzo reaches about 73°F in the afternoon and slips back to 54°F overnight — a 19°F spread between the day's warmth and the night's chill. On most days the high lands between 66°F and 82°F. Set against its neighbours, June runs about 4°F warmer than May and about 2°F cooler than July.

40°50°60°70°80°151015202530
Avg high (°F)Avg low (°F)
17153
27153
37153
47153
57253
67253
77253
87253
97254
107354
117354
127354
137354
147354
157354
167354
177454
187454
197454
207454
217454
227454
237455
247455
257455
267455
277455
287455
297455
307455

San Lorenzo weather by month

How June compares with the rest of the year at a glance. June is the 4th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan57° / 44°3.79.49.74.2
Feb60° / 45°3.89.110.54.8
Mar62° / 47°2.98.811.75.7
Apr66° / 49°1.34.912.96.9
May69° / 52°0.73.2147.8
Jun73° / 54°0.10.914.69.0
Jul75° / 56°0.00.214.39.4
Aug76° / 56°0.00.113.59.4
Sep76° / 55°0.10.412.39.3
Oct72° / 53°0.82.9118.4
Nov63° / 47°1.85.7106.3
Dec57° / 44°3.49.39.44.2

Cloud cover in June

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 76% of the time in June.

Beyond those clear spells, partly cloudy skies cover about 9% of June, with mostly cloudy or overcast conditions the remaining 15%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17723
27723
37723
47822
57822
68020
78020
88119
98218
108317
118416
128515
138614
148614
158713
168713
178713
188812
198812
208812
218812
228911
238911
248911
258911
268911
278911
288911
299010
309010

Chance of precipitation in June

Any precipitation

San Lorenzo gets around 0.1 in of rain over 0.9 wet days in June. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 3% and peaks near 6% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
16
26
35
45
55
65
74
84
94
104
113
123
133
143
152
162
172
182
192
202
212
222
232
241
251
261
271
281
291
301

Humidity in June

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, June lands in the dry band about 90% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)
1937
2937
3937
4937
5937
6937
7937
8937
9937
10937
11937
12937
13937
14937
15928
16928
17919
18919
199010
208911
218911
228812
238713
248614
258515
268416
278317
288218
298218
308119

Wind in June

Winds average 8 mph in June, the windiest month of the year.

Across June, 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.

0246810151015202530
Wind speed (mph)Feels
18light breeze
28light breeze
38light 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
237light breeze
247light breeze
257light breeze
267calm
277calm
287calm
297calm
307calm

Sunrise & sunset in June

DaylightNight

Daylight runs from about 14 h 24 min at the start of June to 14 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over June. Sunrise moves from 4:54 AM to 4:54 AM, and sunset from 7:18 PM to 7:29 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
114.44:547:18
214.44:547:19
314.44:537:20
414.54:537:20
514.54:537:21
614.54:527:21
714.54:527:22
814.54:527:23
914.54:527:23
1014.54:517:24
1114.54:517:24
1214.64:517:25
1314.64:517:25
1414.64:517:26
1514.64:517:26
1614.64:517:26
1714.64:517:27
1814.64:517:27
1914.64:517:27
2014.64:517:28
2114.64:527:28
2214.64:527:28
2314.64:527:28
2414.64:527:29
2514.64:537:29
2614.64:537:29
2714.64:537:29
2814.64:537:29
2914.64:547:29
3014.64:547:29

Solar energy in June

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in June, about 7.84 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.2 kWh/m² to a high of 7.84 kWh/m² in June across the year — June's 7.84 kWh/m² sits near the top of that range.

02468151015202530
Solar energy (kWh/m²)Level
17.5Intense
27.6Intense
37.6Intense
47.6Intense
57.7Intense
67.7Intense
77.7Intense
87.8Intense
97.8Intense
107.8Intense
117.8Intense
127.9Intense
137.9Intense
147.9Intense
157.9Intense
167.9Intense
177.9Intense
187.9Intense
197.9Intense
207.9Intense
217.9Intense
227.9Intense
237.9Intense
247.9Intense
257.9Intense
267.9Intense
277.9Intense
287.9Intense
297.9Intense
307.9Intense
Planning a trip in June

Is June a good time to visit San Lorenzo?

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

9.0
Sightseeing
4th-best month of the year
6.7
Beach & pool
4th-best month of the year

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

What to pack for San Lorenzo in June

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

In June, San Lorenzo sees daytime highs around 73°F and nights near 54°F. Pack sun protection. Worth having: light clothes.

sun protectionlight clothes

Sea temperature near San Lorenzo in June

The nearest coast averages about 55°F in June — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 25 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 San Lorenzo in June

LowModerateHighVery highExtreme

Clear-sky midday UV in June 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 San Lorenzo peaks around June 23 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 23UV 10Dec 15UV 2
UV index (midday)Level
Jan2Moderate
Feb4Moderate
Mar5Moderate
Apr7High
May8Very high
Jun10Extreme
Jul10Extreme
Aug10Very high
Sep6High
Oct5High
Nov2Moderate
Dec2Moderate

Air quality in San Lorenzo in June

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in San Lorenzo is worst in August — around 25 µg/m³ PM2.5 (moderate), about 2.5× the cleanest month (June, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateAug 1824 µg/m³Jun 1110 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb18Moderate
Mar16Moderate
Apr12Moderate
May10Good
Jun10Good
Jul11Good
Aug25Moderate
Sep17Moderate
Oct20Moderate
Nov18Moderate
Dec13Moderate
Location & terrain

Where is San Lorenzo?

San Lorenzo sits at 37.7°N, 122.1°W, 43 ft above sea level, in United States. The nearest listed city is Ashland, 1.9 mi away.

Topography around San Lorenzo

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

Within 2 miles, the terrain around San Lorenzo has only modest variations in elevation — a maximum elevation change of 98 ft around an average of 33 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 2,064 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 4,452 ft.

The land around San Lorenzo is covered by artificial surfaces (75%) within 2 miles, water (36%) and artificial surfaces (26%) within 10 miles, and water (29%), trees (25%) and grassland (25%) within 50 miles.

2 miles
98 ft
10 miles
2,064 ft
50 miles
4,452 ft
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
June weather nearby: Ashland 1.9 mi · Hayward 3.1 mi · Castro Valley 3.1 mi · San Leandro 3.7 mi · Union City 8.1 mi · Alameda 9.9 mi · Dublin 11 mi · Foster City 11 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 San Lorenzo (37.6741°, -122.1332°, 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. 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).