San Francisco weather in June

In June, San Francisco sees average daytime highs of 25°C and overnight lows near 18°C, with 390 mm of rain across 27.3 wet days and about 12.6 hours of daylight. It is the 5th-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 25°C through the month. The sky is clear or mostly clear about 0% of the time in June, and the air most often feels muggy.

Daylight stretches from about 12 h 30 min at the start of June to 12 h 36 min by month's end. Set against the rest of the year, June is San Francisco's 12th-clearest and 10th-windiest month. For the whole year in context, see San Francisco's year-round climate.

Daytime high: 25°; 5th warmest
Overnight low: 18°; 11th coldest
Rainfall: 390 mm; 27.3 wet days
Daylight: 12 h 36 min; 5:19 AM – 5:54 PM
Cloud cover: 93%; 12th clearest
Wind: 5 km/h; 10th windiest
Solar energy: 4.21 kWh/m²
Travel score: 3.8; out of 10

← May San Francisco year-round climate July →Best places to visit in June

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Temperature in June

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 25°C through the month.

A typical June day in San Francisco reaches about 25°C in the afternoon and slips back to 18°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 26°C. Set against its neighbours, June runs on par with May and on par with July.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Avg high (°C)	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25
Avg low (°C)	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18

	Avg high (°C)	Avg low (°C)
1	25	18
2	25	18
3	25	18
4	25	18
5	25	18
6	25	18
7	25	18
8	25	18
9	25	18
10	25	18
11	25	18
12	25	18
13	25	18
14	25	18
15	25	18
16	25	18
17	25	18
18	25	18
19	25	18
20	25	18
21	25	18
22	25	18
23	25	18
24	25	18
25	25	18
26	25	18
27	25	18
28	25	18
29	25	18
30	25	18

San Francisco weather by month

How June compares with the rest of the year at a glance. June is the 5th-warmest and 3rd-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	25° / 16°	29	5.8	11.5	7.8
Feb	25° / 16°	20	4.1	11.7	8.0
Mar	26° / 17°	20	5.2	11.9	7.5
Apr	27° / 17°	62	11.2	12.2	6.2
May	25° / 18°	333	24.7	12.5	4.2
Jun	25° / 18°	390	27.3	12.6	3.8
Jul	24° / 18°	267	25	12.5	4.3
Aug	25° / 18°	352	26.4	12.3	4.0
Sep	24° / 17°	424	28.3	12.1	3.7
Oct	24° / 17°	444	28.8	11.8	3.8
Nov	24° / 17°	224	21.5	11.5	4.8
Dec	24° / 17°	72	10.8	11.4	6.9

Cloud cover in June

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 0% of the time in June, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 3% of June, with mostly cloudy or overcast conditions the remaining 97%.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Clearer (%)	3	3	3	4	3	3	3	3	3	3	4	4	4	4	3	3	2	2	2	2	2	2	2	2	3	3	3	3	4	4
Cloudier (%)	97	97	97	96	97	97	97	97	97	97	96	96	96	96	97	97	98	98	98	98	98	98	98	98	97	97	97	97	96	96

	Clearer (%)	Cloudier (%)
1	3	97
2	3	97
3	3	97
4	4	96
5	3	97
6	3	97
7	3	97
8	3	97
9	3	97
10	3	97
11	4	96
12	4	96
13	4	96
14	4	96
15	3	97
16	3	97
17	2	98
18	2	98
19	2	98
20	2	98
21	2	98
22	2	98
23	2	98
24	2	98
25	3	97
26	3	97
27	3	97
28	3	97
29	4	96
30	4	96

Chance of precipitation in June

Any precipitation

San Francisco gets around 390 mm of rain over 27.3 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 90% and peaks near 93% on the wettest days. The odds ease toward the end of the month.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Rain chance (%)	93	93	93	93	93	93	93	93	93	92	92	92	91	91	91	91	90	90	90	89	89	89	88	88	87	87	86	85	85	84

	Rain chance (%)
1	93
2	93
3	93
4	93
5	93
6	93
7	93
8	93
9	93
10	92
11	92
12	92
13	91
14	91
15	91
16	91
17	90
18	90
19	90
20	89
21	89
22	89
23	88
24	88
25	87
26	87
27	86
28	85
29	85
30	84

Humidity in June

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, June lands in the muggy band about 64% of days. Sticky, muggy-or-worse air turns up on roughly 64% of them.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Humid (%)	29	29	29	29	29	29	29	29	29	29	30	30	31	31	32	33	34	35	36	37	39	40	42	44	45	47	49	51	52	54
Muggy (%)	71	71	71	71	71	71	71	71	71	71	70	70	69	69	68	67	66	65	64	63	61	60	58	56	55	53	51	49	48	46

	Humid (%)	Muggy (%)
1	29	71
2	29	71
3	29	71
4	29	71
5	29	71
6	29	71
7	29	71
8	29	71
9	29	71
10	29	71
11	30	70
12	30	70
13	31	69
14	31	69
15	32	68
16	33	67
17	34	66
18	35	65
19	36	64
20	37	63
21	39	61
22	40	60
23	42	58
24	44	56
25	45	55
26	47	53
27	49	51
28	51	49
29	52	48
30	54	46

Wind in June

Winds average 5 km/h in June.

Across June, daily wind ranges from about 4 km/h on the calmest days to 5 km/h at its breeziest. It stays fairly steady from day to day.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Wind speed (km/h)	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5
Feels	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

	Wind speed (km/h)	Feels
1	4	calm
2	4	calm
3	4	calm
4	4	calm
5	4	calm
6	4	calm
7	4	calm
8	4	calm
9	4	calm
10	4	calm
11	4	calm
12	4	calm
13	4	calm
14	4	calm
15	4	calm
16	5	calm
17	5	calm
18	5	calm
19	5	calm
20	5	calm
21	5	calm
22	5	calm
23	5	calm
24	5	calm
25	5	calm
26	5	calm
27	5	calm
28	5	calm
29	5	calm
30	5	calm

Sunrise & sunset in June

DaylightNight

Daylight runs from about 12 h 30 min at the start of June to 12 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over June. Sunrise moves from 5:18 AM to 5:22 AM, and sunset from 5:50 PM to 5:57 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Daylight (h)	12.5	12.5	12.5	12.6	12.6	12.6	12.6	12.6	12.6	12.6	12.6	12.6	12.6	12.6	12.6	12.6	12.6	12.6	12.6	12.6	12.6	12.6	12.6	12.6	12.6	12.6	12.6	12.6	12.6	12.6
Sunrise (AM)	5:18	5:18	5:18	5:18	5:18	5:18	5:18	5:18	5:18	5:18	5:19	5:19	5:19	5:19	5:19	5:19	5:20	5:20	5:20	5:20	5:20	5:20	5:21	5:21	5:21	5:21	5:22	5:22	5:22	5:22
Sunset (PM)	5:50	5:51	5:51	5:51	5:51	5:52	5:52	5:52	5:52	5:53	5:53	5:53	5:53	5:54	5:54	5:54	5:54	5:55	5:55	5:55	5:55	5:56	5:56	5:56	5:56	5:56	5:57	5:57	5:57	5:57

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	12.5	5:18	5:50
2	12.5	5:18	5:51
3	12.5	5:18	5:51
4	12.6	5:18	5:51
5	12.6	5:18	5:51
6	12.6	5:18	5:52
7	12.6	5:18	5:52
8	12.6	5:18	5:52
9	12.6	5:18	5:52
10	12.6	5:18	5:53
11	12.6	5:19	5:53
12	12.6	5:19	5:53
13	12.6	5:19	5:53
14	12.6	5:19	5:54
15	12.6	5:19	5:54
16	12.6	5:19	5:54
17	12.6	5:20	5:54
18	12.6	5:20	5:55
19	12.6	5:20	5:55
20	12.6	5:20	5:55
21	12.6	5:20	5:55
22	12.6	5:20	5:56
23	12.6	5:21	5:56
24	12.6	5:21	5:56
25	12.6	5:21	5:56
26	12.6	5:21	5:56
27	12.6	5:22	5:57
28	12.6	5:22	5:57
29	12.6	5:22	5:57
30	12.6	5:22	5:57

Solar energy in June

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in June, about 4.21 kWh/m².

For context, solar energy here swings from a low near 3.65 kWh/m² to a high of 5.95 kWh/m² in March across the year — June's 4.21 kWh/m² sits near the bottom.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Solar energy (kWh/m²)	4.2	4.2	4.2	4.3	4.3	4.3	4.3	4.3	4.3	4.3	4.2	4.2	4.2	4.2	4.2	4.2	4.2	4.2	4.2	4.2	4.2	4.2	4.2	4.2	4.2	4.2	4.2	4.2	4.2	4.2
Level	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright

	Solar energy (kWh/m²)	Level
1	4.2	Bright
2	4.2	Bright
3	4.2	Bright
4	4.3	Bright
5	4.3	Bright
6	4.3	Bright
7	4.3	Bright
8	4.3	Bright
9	4.3	Bright
10	4.3	Bright
11	4.2	Bright
12	4.2	Bright
13	4.2	Bright
14	4.2	Bright
15	4.2	Bright
16	4.2	Bright
17	4.2	Bright
18	4.2	Bright
19	4.2	Bright
20	4.2	Bright
21	4.2	Bright
22	4.2	Bright
23	4.2	Bright
24	4.2	Bright
25	4.2	Bright
26	4.2	Bright
27	4.2	Bright
28	4.2	Bright
29	4.2	Bright
30	4.2	Bright

Planning a trip in June

Hazard calendar for San Francisco

In seasonPeak

In June, San Francisco sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

San Francisco's rainy season runs May–November, when most of the year's rain falls.

Rainy season

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Is June a good time to visit San Francisco?

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

3.8

Sightseeing

10th-best month of the year

3.4

Beach & pool

10th-best month of the year

June is a weaker month for outdoor sightseeing in San Francisco.

What to pack for San Francisco in June

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

In June, San Francisco sees daytime highs around 25°C and nights near 18°C. Pack rain gear. Worth having: light clothes. About 27 days see rain.

rain gearlight clothes

Sea temperature near San Francisco in June

The nearest coast averages about 29°C 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 56 km away) is warmest in April at about 29°C and coldest in November near 28°C.

The water stays above 20°C all year — warm enough for a swim any month.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Sea temperature (°C)	29	29	29	29	29	29	29	29	29	28	28	28
Comfort	Tropical	Tropical	Tropical	Tropical	Tropical	Tropical	Tropical	Tropical	Tropical	Tropical	Warm	Tropical

	Sea temperature (°C)	Comfort
Jan	29	Tropical
Feb	29	Tropical
Mar	29	Tropical
Apr	29	Tropical
May	29	Tropical
Jun	29	Tropical
Jul	29	Tropical
Aug	29	Tropical
Sep	29	Tropical
Oct	28	Tropical
Nov	28	Warm
Dec	28	Tropical

UV index in San Francisco in June

LowModerateHighVery highExtreme

Clear-sky midday UV in June peaks around 13 (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 Francisco peaks around March 19 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 at about 10 (extreme).

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	12	14	15	14	13	13	13	13	13	12	12	10
Level	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme

	UV index (midday)	Level
Jan	12	Extreme
Feb	14	Extreme
Mar	15	Extreme
Apr	14	Extreme
May	13	Extreme
Jun	13	Extreme
Jul	13	Extreme
Aug	13	Extreme
Sep	13	Extreme
Oct	12	Extreme
Nov	12	Extreme
Dec	10	Extreme

Air quality in San Francisco 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 Francisco is worst in May — around 19 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (January, 9 µg/m³).

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	9	10	11	17	19	17	18	17	16	14	12	10
Level	Good	Good	Good	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Good	Good

	PM2.5 (µg/m³)	Level
Jan	9	Good
Feb	10	Good
Mar	11	Good
Apr	17	Moderate
May	19	Moderate
Jun	17	Moderate
Jul	18	Moderate
Aug	17	Moderate
Sep	16	Moderate
Oct	14	Moderate
Nov	12	Good
Dec	10	Good

Location & terrain

Where is San Francisco?

San Francisco sits at 10.0°N, 84.1°W, 1,131 m above sea level, in Costa Rica. The nearest listed city is Heredia, 1.0 km away.

Topography around San Francisco

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of San Francisco.

Within 3 km, the terrain around San Francisco has significant variations in elevation — a maximum elevation change of 271 m around an average of 1,102 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 2,296 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,470 m.

The land around San Francisco is covered by artificial surfaces (68%) and trees (22%) within 3 km, trees (56%) and artificial surfaces (29%) within 16 km, and trees (70%) within 80 km.

3 km

271 m

artificial surfaces 68%

16 km

2,296 m

trees 56%

80 km

3,470 m

trees 70%

treesgrasslandcroplandartificial surfaceswater

← May San Francisco year-round climate July →Best places to visit in June

June weather nearby: Heredia 1.0 km · Mercedes Norte 1.0 km · San Pablo 3.0 km · San Juan 6.0 km · Colima 7.0 km · San Rafael 7.0 km · San Jose 8.0 km · Calle Blancos 9.0 km

Costa Rica travel facts

Travel advisory: Level 2; Exercise Increased Caution
Power plugs: Type A / B; 120 V · 60 Hz
Prices: ≈ 59% of US; price level, 2025
GDP per capita: $19,970; 2025
Happiness: 7.4 / 10; World Happiness, 2025
Safe drinking water: 81%; of population, 2024
Homicide rate: 17.7; per 100k, 2023
Road deaths: 14.8; per 100k/yr, 2019
Income group: High; World Bank
English: Moderate; EF EPI 516
Religion

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 Francisco (9.9938°, -84.1274°, elevation 1,131 m), 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).

	Avg high (°C)	Avg low (°C)
1	25	18
2	25	18
3	25	18
4	25	18
5	25	18
6	25	18
7	25	18
8	25	18
9	25	18
10	25	18
11	25	18
12	25	18
13	25	18
14	25	18
15	25	18
16	25	18
17	25	18
18	25	18
19	25	18
20	25	18
21	25	18
22	25	18
23	25	18
24	25	18
25	25	18
26	25	18
27	25	18
28	25	18
29	25	18
30	25	18

	Clearer (%)	Cloudier (%)
1	3	97
2	3	97
3	3	97
4	4	96
5	3	97
6	3	97
7	3	97
8	3	97
9	3	97
10	3	97
11	4	96
12	4	96
13	4	96
14	4	96
15	3	97
16	3	97
17	2	98
18	2	98
19	2	98
20	2	98
21	2	98
22	2	98
23	2	98
24	2	98
25	3	97
26	3	97
27	3	97
28	3	97
29	4	96
30	4	96

	Rain chance (%)
1	93
2	93
3	93
4	93
5	93
6	93
7	93
8	93
9	93
10	92
11	92
12	92
13	91
14	91
15	91
16	91
17	90
18	90
19	90
20	89
21	89
22	89
23	88
24	88
25	87
26	87
27	86
28	85
29	85
30	84

	Humid (%)	Muggy (%)
1	29	71
2	29	71
3	29	71
4	29	71
5	29	71
6	29	71
7	29	71
8	29	71
9	29	71
10	29	71
11	30	70
12	30	70
13	31	69
14	31	69
15	32	68
16	33	67
17	34	66
18	35	65
19	36	64
20	37	63
21	39	61
22	40	60
23	42	58
24	44	56
25	45	55
26	47	53
27	49	51
28	51	49
29	52	48
30	54	46

	Avg high (°C)	Avg low (°C)
1	25	18
2	25	18
3	25	18
4	25	18
5	25	18
6	25	18
7	25	18
8	25	18
9	25	18
10	25	18
11	25	18
12	25	18
13	25	18
14	25	18
15	25	18
16	25	18
17	25	18
18	25	18
19	25	18
20	25	18
21	25	18
22	25	18
23	25	18
24	25	18
25	25	18
26	25	18
27	25	18
28	25	18
29	25	18
30	25	18

	Clearer (%)	Cloudier (%)
1	3	97
2	3	97
3	3	97
4	4	96
5	3	97
6	3	97
7	3	97
8	3	97
9	3	97
10	3	97
11	4	96
12	4	96
13	4	96
14	4	96
15	3	97
16	3	97
17	2	98
18	2	98
19	2	98
20	2	98
21	2	98
22	2	98
23	2	98
24	2	98
25	3	97
26	3	97
27	3	97
28	3	97
29	4	96
30	4	96

	Rain chance (%)
1	93
2	93
3	93
4	93
5	93
6	93
7	93
8	93
9	93
10	92
11	92
12	92
13	91
14	91
15	91
16	91
17	90
18	90
19	90
20	89
21	89
22	89
23	88
24	88
25	87
26	87
27	86
28	85
29	85
30	84

	Humid (%)	Muggy (%)
1	29	71
2	29	71
3	29	71
4	29	71
5	29	71
6	29	71
7	29	71
8	29	71
9	29	71
10	29	71
11	30	70
12	30	70
13	31	69
14	31	69
15	32	68
16	33	67
17	34	66
18	35	65
19	36	64
20	37	63
21	39	61
22	40	60
23	42	58
24	44	56
25	45	55
26	47	53
27	49	51
28	51	49
29	52	48
30	54	46

	Avg high (°C)	Avg low (°C)
1	25	18
2	25	18
3	25	18
4	25	18
5	25	18
6	25	18
7	25	18
8	25	18
9	25	18
10	25	18
11	25	18
12	25	18
13	25	18
14	25	18
15	25	18
16	25	18
17	25	18
18	25	18
19	25	18
20	25	18
21	25	18
22	25	18
23	25	18
24	25	18
25	25	18
26	25	18
27	25	18
28	25	18
29	25	18
30	25	18

	Clearer (%)	Cloudier (%)
1	3	97
2	3	97
3	3	97
4	4	96
5	3	97
6	3	97
7	3	97
8	3	97
9	3	97
10	3	97
11	4	96
12	4	96
13	4	96
14	4	96
15	3	97
16	3	97
17	2	98
18	2	98
19	2	98
20	2	98
21	2	98
22	2	98
23	2	98
24	2	98
25	3	97
26	3	97
27	3	97
28	3	97
29	4	96
30	4	96

	Rain chance (%)
1	93
2	93
3	93
4	93
5	93
6	93
7	93
8	93
9	93
10	92
11	92
12	92
13	91
14	91
15	91
16	91
17	90
18	90
19	90
20	89
21	89
22	89
23	88
24	88
25	87
26	87
27	86
28	85
29	85
30	84

	Humid (%)	Muggy (%)
1	29	71
2	29	71
3	29	71
4	29	71
5	29	71
6	29	71
7	29	71
8	29	71
9	29	71
10	29	71
11	30	70
12	30	70
13	31	69
14	31	69
15	32	68
16	33	67
17	34	66
18	35	65
19	36	64
20	37	63
21	39	61
22	40	60
23	42	58
24	44	56
25	45	55
26	47	53
27	49	51
28	51	49
29	52	48
30	54	46