San Francisco weather in April

In April, San Francisco sees average daytime highs of 24°C and overnight lows near 14°C, with 100 mm of rain across 8.2 wet days and about 11.3 hours of daylight. It is the 7th-warmest and 7th-wettest month of the year here.

Highs ease over the month, from about 25°C in the first days to 23°C by the end. The sky is clear or mostly clear about 49% of the time in April, and the air most often feels dry.

Daylight stretches from about 11 h 42 min at the start of April to 10 h 48 min by month's end. Set against the rest of the year, April is San Francisco's 8th-clearest and 8th-windiest month. For the whole year in context, see San Francisco's year-round climate.

Daytime high: 24°; 7th warmest
Overnight low: 14°; 7th coldest
Rainfall: 100 mm; 8.2 wet days
Daylight: 11 h 12 min; 7:32 AM – 6:46 PM
Cloud cover: 46%; 8th clearest
Wind: 12 km/h; 8th windiest
Solar energy: 3.77 kWh/m²
Travel score: 7.4; out of 10

San Francisco is city in Argentina.

Founded: 1886

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

← March San Francisco year-round climate May →Best places to visit in April

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

Temperature in April

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 25°C in the first days to 23°C by the end.

A typical April day in San Francisco reaches about 24°C in the afternoon and slips back to 14°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 29°C. Set against its neighbours, April runs about 3°C cooler than March and about 4°C warmer than May.

	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	24	24	24	24	24	24	24	24	24	24	24	23	23	23	23	23	23	23	23	23	22
Avg low (°C)	15	15	15	15	15	15	15	15	15	15	14	14	14	14	14	14	14	14	14	13	13	13	13	13	13	13	13	13	13	12

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

San Francisco weather by month

How April compares with the rest of the year at a glance. April is the 7th-warmest and 7th-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	30° / 19°	119	9.1	13.8	5.3
Feb	29° / 19°	115	9.1	13.1	5.8
Mar	27° / 17°	138	9.2	12.2	6.8
Apr	24° / 14°	100	8.2	11.3	7.4
May	20° / 11°	47	5.5	10.4	7.1
Jun	18° / 8°	30	4.3	10	6.6
Jul	17° / 6°	20	3.5	10.2	6.7
Aug	20° / 8°	39	3.8	10.9	7.6
Sep	22° / 11°	51	5.4	11.8	7.8
Oct	25° / 14°	116	9.6	12.8	7.2
Nov	28° / 16°	119	8.9	13.6	6.6
Dec	30° / 18°	128	9.6	14	5.5

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 49% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 12% of April, with mostly cloudy or overcast conditions the remaining 39%.

	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 (%)	63	62	61	61	60	59	59	58	58	58	59	59	60	60	61	61	61	62	63	63	63	63	62	62	62	61	60	60	59	58
Cloudier (%)	37	38	39	39	40	41	41	42	42	42	41	41	40	40	39	39	39	38	37	37	37	37	38	38	38	39	40	40	41	42

	Clearer (%)	Cloudier (%)
1	63	37
2	62	38
3	61	39
4	61	39
5	60	40
6	59	41
7	59	41
8	58	42
9	58	42
10	58	42
11	59	41
12	59	41
13	60	40
14	60	40
15	61	39
16	61	39
17	61	39
18	62	38
19	63	37
20	63	37
21	63	37
22	63	37
23	62	38
24	62	38
25	62	38
26	61	39
27	60	40
28	60	40
29	59	41
30	58	42

Chance of precipitation in April

Any precipitation

San Francisco gets around 100 mm of rain over 8.2 wet days in April. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 27% and peaks near 30% 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 (%)	30	30	30	30	30	30	30	30	29	29	28	28	27	27	26	26	25	25	25	25	25	24	24	24	24	24	24	24	24	23

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

Humidity in April

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, April lands in the dry band about 40% of days. Sticky, muggy-or-worse air turns up on roughly 15% 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
Dry (%)	26	26	27	28	28	29	31	32	33	35	36	38	39	40	41	43	44	45	45	46	47	48	49	49	50	51	51	52	53	54
Comfortable (%)	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	28	28	28	28	27	27	27	26	25	25	24	23	22	21	20
Humid (%)	26	25	25	25	24	24	23	23	22	21	20	19	18	17	17	16	16	15	15	15	14	14	15	15	15	15	16	16	16	16
Muggy (%)	18	17	17	17	16	16	15	15	15	14	14	13	13	12	12	11	11	10	10	10	9	9	9	9	9	9	9	9	9	9
Oppressive (%)	4	4	4	4	4	4	4	4	4	4	4	3	3	3	3	3	2	2	2	2	2	2	2	1	1	1	1	1	1	1

	Dry (%)	Comfortable (%)	Humid (%)	Muggy (%)	Oppressive (%)
1	26	27	26	18	4
2	26	27	25	17	4
3	27	27	25	17	4
4	28	27	25	17	4
5	28	27	24	16	4
6	29	27	24	16	4
7	31	27	23	15	4
8	32	27	23	15	4
9	33	27	22	15	4
10	35	27	21	14	4
11	36	27	20	14	4
12	38	27	19	13	3
13	39	27	18	13	3
14	40	27	17	12	3
15	41	27	17	12	3
16	43	28	16	11	3
17	44	28	16	11	2
18	45	28	15	10	2
19	45	28	15	10	2
20	46	27	15	10	2
21	47	27	14	9	2
22	48	27	14	9	2
23	49	26	15	9	2
24	49	25	15	9	1
25	50	25	15	9	1
26	51	24	15	9	1
27	51	23	16	9	1
28	52	22	16	9	1
29	53	21	16	9	1
30	54	20	16	9	1

Wind in April

Winds average 12 km/h in April.

Across April, daily wind ranges from about 12 km/h on the calmest days to 12 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)	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12
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	12	calm
2	12	calm
3	12	calm
4	12	calm
5	12	calm
6	12	calm
7	12	calm
8	12	calm
9	12	calm
10	12	calm
11	12	calm
12	12	calm
13	12	calm
14	12	calm
15	12	calm
16	12	calm
17	12	calm
18	12	calm
19	12	calm
20	12	calm
21	12	calm
22	12	calm
23	12	calm
24	12	calm
25	12	calm
26	12	calm
27	12	calm
28	12	calm
29	12	calm
30	12	calm

Sunrise & sunset in April

DaylightNight

Daylight runs from about 11 h 42 min at the start of April to 10 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 54 minutes over April. Sunrise moves from 7:22 AM to 7:41 AM, and sunset from 7:04 PM to 6:30 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)	11.7	11.7	11.6	11.6	11.6	11.6	11.5	11.5	11.5	11.4	11.4	11.4	11.3	11.3	11.3	11.2	11.2	11.2	11.1	11.1	11.1	11.0	11.0	11.0	11.0	10.9	10.9	10.9	10.8	10.8
Sunrise (AM)	7:22	7:22	7:23	7:24	7:24	7:25	7:26	7:26	7:27	7:28	7:28	7:29	7:30	7:30	7:31	7:32	7:32	7:33	7:34	7:34	7:35	7:36	7:36	7:37	7:38	7:38	7:39	7:40	7:41	7:41
Sunset (PM)	7:04	7:03	7:02	7:01	6:59	6:58	6:57	6:55	6:54	6:53	6:52	6:50	6:49	6:48	6:47	6:46	6:44	6:43	6:42	6:41	6:40	6:39	6:37	6:36	6:35	6:34	6:33	6:32	6:31	6:30

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	11.7	7:22	7:04
2	11.7	7:22	7:03
3	11.6	7:23	7:02
4	11.6	7:24	7:01
5	11.6	7:24	6:59
6	11.6	7:25	6:58
7	11.5	7:26	6:57
8	11.5	7:26	6:55
9	11.5	7:27	6:54
10	11.4	7:28	6:53
11	11.4	7:28	6:52
12	11.4	7:29	6:50
13	11.3	7:30	6:49
14	11.3	7:30	6:48
15	11.3	7:31	6:47
16	11.2	7:32	6:46
17	11.2	7:32	6:44
18	11.2	7:33	6:43
19	11.1	7:34	6:42
20	11.1	7:34	6:41
21	11.1	7:35	6:40
22	11.0	7:36	6:39
23	11.0	7:36	6:37
24	11.0	7:37	6:36
25	11.0	7:38	6:35
26	10.9	7:38	6:34
27	10.9	7:39	6:33
28	10.9	7:40	6:32
29	10.8	7:41	6:31
30	10.8	7:41	6:30

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 3.77 kWh/m².

For context, solar energy here swings from a low near 2.55 kWh/m² to a high of 7.19 kWh/m² in December across the year — April's 3.77 kWh/m² falls in the middle.

	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)	4.3	4.3	4.2	4.2	4.1	4.1	4.1	4.0	4.0	4.0	3.9	3.9	3.9	3.9	3.8	3.8	3.8	3.8	3.7	3.7	3.7	3.6	3.6	3.6	3.5	3.5	3.5	3.4	3.4	3.4
Level	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate

	Solar energy (kWh/m²)	Level
1	4.3	Bright
2	4.3	Bright
3	4.2	Bright
4	4.2	Bright
5	4.1	Bright
6	4.1	Bright
7	4.1	Bright
8	4.0	Bright
9	4.0	Moderate
10	4.0	Moderate
11	3.9	Moderate
12	3.9	Moderate
13	3.9	Moderate
14	3.9	Moderate
15	3.8	Moderate
16	3.8	Moderate
17	3.8	Moderate
18	3.8	Moderate
19	3.7	Moderate
20	3.7	Moderate
21	3.7	Moderate
22	3.6	Moderate
23	3.6	Moderate
24	3.6	Moderate
25	3.5	Moderate
26	3.5	Moderate
27	3.5	Moderate
28	3.4	Moderate
29	3.4	Moderate
30	3.4	Moderate

Planning a trip in April

Is April a good time to visit San Francisco?

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

7.4

Sightseeing

3rd-best month of the year

6.1

Beach & pool

7th-best month of the year

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

What to pack for San Francisco in April

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

In April, San Francisco sees daytime highs around 24°C and nights near 14°C. Worth packing: light clothes and rain gear. About 8 days see rain.

light clothesrain gear

UV index in San Francisco in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in San Francisco peaks around January 17 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 3 (moderate).

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)	14	13	11	7	4	3	3	5	7	10	11	13
Level	Extreme	Extreme	Extreme	High	Moderate	Moderate	Moderate	Moderate	High	Very high	Extreme	Extreme

	UV index (midday)	Level
Jan	14	Extreme
Feb	13	Extreme
Mar	11	Extreme
Apr	7	High
May	4	Moderate
Jun	3	Moderate
Jul	3	Moderate
Aug	5	Moderate
Sep	7	High
Oct	10	Very high
Nov	11	Extreme
Dec	13	Extreme

Location & terrain

Where is San Francisco?

San Francisco sits at 31.4°S, 62.1°W, 120 m above sea level, in Argentina. The nearest listed city is San Jorge, 57 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 only modest variations in elevation — a maximum elevation change of 13 m around an average of 114 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 24 m; within 80 km, only modest variations in elevation — a maximum elevation change of 103 m.

The land around San Francisco is covered by artificial surfaces (50%) and cropland (30%) within 3 km, cropland (94%) within 16 km, and cropland (88%) within 80 km.

3 km

13 m

artificial surfaces 50%

16 km

24 m

cropland 94%

80 km

103 m

cropland 88%

treesgrasslandcroplandartificial surfaceswater

← March San Francisco year-round climate May →Best places to visit in April

April weather nearby: San Jorge 57 km · Rafaela 60 km · Sunchales 73 km · Las Varillas 78 km · Morteros 80 km · Arroyito 92 km · Gálvez 106 km · Esperanza 109 km

Argentina travel facts

Travel advisory: Level 1; Exercise Normal Precautions
Power plugs: Type C / I; 220 V · 50 Hz
Prices: ≈ 46% of US; price level, 2025
GDP per capita: $14,898; 2025
Happiness: 6.4 / 10; World Happiness, 2025
Homicide rate: 4.5; per 100k, 2023
Road deaths: 14.1; per 100k/yr, 2019
Income group: Upper middle; World Bank
English: High; EF EPI 575
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 (-31.425°, -62.084°, elevation 120 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. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. 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	15
2	25	15
3	25	15
4	25	15
5	25	15
6	25	15
7	25	15
8	25	15
9	25	15
10	24	15
11	24	14
12	24	14
13	24	14
14	24	14
15	24	14
16	24	14
17	24	14
18	24	14
19	24	14
20	24	13
21	23	13
22	23	13
23	23	13
24	23	13
25	23	13
26	23	13
27	23	13
28	23	13
29	23	13
30	22	12

	Clearer (%)	Cloudier (%)
1	63	37
2	62	38
3	61	39
4	61	39
5	60	40
6	59	41
7	59	41
8	58	42
9	58	42
10	58	42
11	59	41
12	59	41
13	60	40
14	60	40
15	61	39
16	61	39
17	61	39
18	62	38
19	63	37
20	63	37
21	63	37
22	63	37
23	62	38
24	62	38
25	62	38
26	61	39
27	60	40
28	60	40
29	59	41
30	58	42

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

	Dry (%)	Comfortable (%)	Humid (%)	Muggy (%)	Oppressive (%)
1	26	27	26	18	4
2	26	27	25	17	4
3	27	27	25	17	4
4	28	27	25	17	4
5	28	27	24	16	4
6	29	27	24	16	4
7	31	27	23	15	4
8	32	27	23	15	4
9	33	27	22	15	4
10	35	27	21	14	4
11	36	27	20	14	4
12	38	27	19	13	3
13	39	27	18	13	3
14	40	27	17	12	3
15	41	27	17	12	3
16	43	28	16	11	3
17	44	28	16	11	2
18	45	28	15	10	2
19	45	28	15	10	2
20	46	27	15	10	2
21	47	27	14	9	2
22	48	27	14	9	2
23	49	26	15	9	2
24	49	25	15	9	1
25	50	25	15	9	1
26	51	24	15	9	1
27	51	23	16	9	1
28	52	22	16	9	1
29	53	21	16	9	1
30	54	20	16	9	1

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

	Clearer (%)	Cloudier (%)
1	63	37
2	62	38
3	61	39
4	61	39
5	60	40
6	59	41
7	59	41
8	58	42
9	58	42
10	58	42
11	59	41
12	59	41
13	60	40
14	60	40
15	61	39
16	61	39
17	61	39
18	62	38
19	63	37
20	63	37
21	63	37
22	63	37
23	62	38
24	62	38
25	62	38
26	61	39
27	60	40
28	60	40
29	59	41
30	58	42

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

	Dry (%)	Comfortable (%)	Humid (%)	Muggy (%)	Oppressive (%)
1	26	27	26	18	4
2	26	27	25	17	4
3	27	27	25	17	4
4	28	27	25	17	4
5	28	27	24	16	4
6	29	27	24	16	4
7	31	27	23	15	4
8	32	27	23	15	4
9	33	27	22	15	4
10	35	27	21	14	4
11	36	27	20	14	4
12	38	27	19	13	3
13	39	27	18	13	3
14	40	27	17	12	3
15	41	27	17	12	3
16	43	28	16	11	3
17	44	28	16	11	2
18	45	28	15	10	2
19	45	28	15	10	2
20	46	27	15	10	2
21	47	27	14	9	2
22	48	27	14	9	2
23	49	26	15	9	2
24	49	25	15	9	1
25	50	25	15	9	1
26	51	24	15	9	1
27	51	23	16	9	1
28	52	22	16	9	1
29	53	21	16	9	1
30	54	20	16	9	1

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

	Clearer (%)	Cloudier (%)
1	63	37
2	62	38
3	61	39
4	61	39
5	60	40
6	59	41
7	59	41
8	58	42
9	58	42
10	58	42
11	59	41
12	59	41
13	60	40
14	60	40
15	61	39
16	61	39
17	61	39
18	62	38
19	63	37
20	63	37
21	63	37
22	63	37
23	62	38
24	62	38
25	62	38
26	61	39
27	60	40
28	60	40
29	59	41
30	58	42

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

	Dry (%)	Comfortable (%)	Humid (%)	Muggy (%)	Oppressive (%)
1	26	27	26	18	4
2	26	27	25	17	4
3	27	27	25	17	4
4	28	27	25	17	4
5	28	27	24	16	4
6	29	27	24	16	4
7	31	27	23	15	4
8	32	27	23	15	4
9	33	27	22	15	4
10	35	27	21	14	4
11	36	27	20	14	4
12	38	27	19	13	3
13	39	27	18	13	3
14	40	27	17	12	3
15	41	27	17	12	3
16	43	28	16	11	3
17	44	28	16	11	2
18	45	28	15	10	2
19	45	28	15	10	2
20	46	27	15	10	2
21	47	27	14	9	2
22	48	27	14	9	2
23	49	26	15	9	2
24	49	25	15	9	1
25	50	25	15	9	1
26	51	24	15	9	1
27	51	23	16	9	1
28	52	22	16	9	1
29	53	21	16	9	1
30	54	20	16	9	1