San Luis Obispo weather in June

In June, San Luis Obispo sees average daytime highs of 69°F and overnight lows near 56°F, with 0.1 in of rain across 0.4 wet days and about 14.3 hours of daylight. It is the 5th-warmest and 9th-wettest month of the year here.

Highs climb over the month, from about 67°F in the first days to 70°F by the end. The sky is clear or mostly clear about 84% of the time in June, and the air most often feels dry.

Daylight stretches from about 14 h 12 min at the start of June to 14 h 24 min by month's end. Set against the rest of the year, June is San Luis Obispo's 4th-clearest and 7th-windiest month. For the whole year in context, see San Luis Obispo's year-round climate.

Daytime high
69°
5th warmest
Overnight low
56°
8th coldest
Rainfall
0.1 in
0.4 wet days
Daylight
14 h 24 min
4:52 AM – 7:14 PM
Cloud cover
19%
4th clearest
Wind
6 mph
7th windiest
Solar energy
8.19 kWh/m²
Travel score
8.6
out of 10

San Luis Obispo is county seat of San Luis Obispo County, California, United States.

Density
1,414/km²
people per km²
Founded
1772

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 67°F in the first days to 70°F by the end.

A typical June day in San Luis Obispo reaches about 69°F in the afternoon and slips back to 56°F overnight — a 13°F spread between the day's warmth and the night's chill. On most days the high lands between 63°F and 76°F. Set against its neighbours, June runs about 3°F warmer than May and about 2°F cooler than July.

50°60°70°80°151015202530
Avg high (°F)Avg low (°F)
16754
26754
36755
46755
56755
66755
76755
86855
96855
106855
116855
126855
136855
146856
156856
166956
176956
186956
196956
206956
216956
226956
236956
247057
257057
267057
277057
287057
297057
307057

San Luis Obispo weather by month

How June compares with the rest of the year at a glance. June is the 5th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan60° / 47°3.97.29.95.2
Feb60° / 48°3.77.610.75.1
Mar61° / 49°2.86.211.75.8
Apr63° / 51°1.03.412.96.9
May65° / 53°0.41.513.87.8
Jun69° / 56°0.10.414.38.6
Jul71° / 58°0.00.114.19.0
Aug72° / 59°0.00.113.39.2
Sep72° / 59°0.00.412.29.1
Oct70° / 56°0.8211.18.5
Nov64° / 51°1.33.610.17.1
Dec60° / 47°3.06.69.75.3

Cloud cover in June

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 84% of the time in June.

Beyond those clear spells, partly cloudy skies cover about 8% of June, with mostly cloudy or overcast conditions the remaining 8%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18713
28812
38812
48812
58812
69010
79010
89010
9919
10919
11928
12928
13928
14937
15946
16946
17946
18946
19946
20946
21946
22946
23946
24946
25946
26946
27946
28946
29946
30946

Chance of precipitation in June

Any precipitation

San Luis Obispo gets around 0.1 in of rain over 0.4 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 1% and peaks near 2% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
12
22
32
42
52
62
72
82
92
102
111
121
131
141
151
161
171
180
190
200
210
220
230
240
250
260
270
280
290
300

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 76% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
187130
287130
387130
487130
586140
686140
786140
886140
986140
1085150
1185150
1284160
1384160
1483170
1581181
1680191
1778211
1877221
1975241
2073261
2171281
2269301
2367321
2465341
2563361
2662371
2760391
2858411
2957421
3054442

Wind in June

Winds average 6 mph in June.

Across June, 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.

0246810151015202530
Wind speed (mph)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

Sunrise & sunset in June

DaylightNight

Daylight runs from about 14 h 12 min at the start of June to 14 h 24 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 4:55 AM, and sunset from 7:06 PM to 7:17 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
114.24:547:06
214.24:547:07
314.24:547:07
414.24:537:08
514.34:537:09
614.34:537:09
714.34:537:10
814.34:527:10
914.34:527:11
1014.34:527:11
1114.34:527:12
1214.34:527:12
1314.34:527:13
1414.44:527:13
1514.44:527:13
1614.44:527:14
1714.44:527:14
1814.44:527:15
1914.44:527:15
2014.44:527:15
2114.44:527:15
2214.44:537:16
2314.44:537:16
2414.44:537:16
2514.44:537:16
2614.44:547:16
2714.44:547:16
2814.44:547:16
2914.44:557:17
3014.44:557:17

Solar energy in June

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in June, about 8.19 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.76 kWh/m² to a high of 8.19 kWh/m² in June across the year — June's 8.19 kWh/m² sits near the top of that range.

02468151015202530
Solar energy (kWh/m²)Level
18.0Intense
28.0Intense
38.0Intense
48.1Intense
58.1Intense
68.1Intense
78.1Intense
88.1Intense
98.1Intense
108.2Intense
118.2Intense
128.2Intense
138.2Intense
148.2Intense
158.2Intense
168.2Intense
178.2Intense
188.2Intense
198.2Intense
208.2Intense
218.2Intense
228.2Intense
238.2Intense
248.2Intense
258.2Intense
268.2Intense
278.2Intense
288.2Intense
298.2Intense
308.2Intense
Planning a trip in June

Is June a good time to visit San Luis Obispo?

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

8.6
Sightseeing
4th-best month of the year
4.7
Beach & pool
5th-best month of the year

June is one of the better times to visit San Luis Obispo for general sightseeing.

What to pack for San Luis Obispo in June

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

In June, San Luis Obispo sees daytime highs around 69°F and nights near 56°F. Pack sun protection.

sun protection

Sea temperature near San Luis Obispo 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 11 mi away) is warmest in September at about 60°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°62°JanFebMarAprMayJunJulAugSepOctNovDecbracingcool
Sea temperature (°F)Comfort
Jan56Bracing
Feb56Bracing
Mar55Bracing
Apr54Bracing
May54Bracing
Jun55Bracing
Jul58Bracing
Aug59Cool
Sep60Cool
Oct60Cool
Nov58Bracing
Dec57Bracing

UV index in San Luis Obispo in June

LowModerateHighVery highExtreme

Clear-sky midday UV in June peaks around 11 (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 Luis Obispo peaks around June 22 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJun 22UV 11Dec 15UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar5Moderate
Apr7High
May8Very high
Jun11Extreme
Jul10Extreme
Aug10Extreme
Sep8Very high
Oct6High
Nov3Moderate
Dec3Moderate

Air quality in San Luis Obispo 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 Luis Obispo is worst in August — around 19 µg/m³ PM2.5 (moderate), about 4.5× the cleanest month (June, 4 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodAug 2218 µg/m³Jun 124 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb6Good
Mar7Good
Apr6Good
May5Good
Jun4Good
Jul7Good
Aug19Moderate
Sep17Moderate
Oct7Good
Nov6Good
Dec5Good
Location & terrain

Where is San Luis Obispo?

San Luis Obispo sits at 35.3°N, 120.7°W, 233 ft above sea level, in United States. The nearest listed city is Arroyo Grande, 12 mi away.

Topography around San Luis Obispo

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

Within 2 miles, the terrain around San Luis Obispo has significant variations in elevation — a maximum elevation change of 1,572 ft around an average of 420 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 2,861 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 5,407 ft.

The land around San Luis Obispo is covered by grassland (39%), artificial surfaces (36%) and trees (20%) within 2 miles, grassland (44%) and trees (41%) within 10 miles, and grassland (50%) and water (25%) within 50 miles.

2 miles
1,572 ft
10 miles
2,861 ft
50 miles
5,407 ft
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
June weather nearby: Arroyo Grande 12 mi · Atascadero 14 mi · Nipomo 19 mi · Paso Robles 24 mi · Santa Maria 26 mi · Orcutt 32 mi · Lompoc 46 mi · Coalinga 62 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 Luis Obispo (35.2828°, -120.6596°, elevation 233 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).