San Pablo weather in April

In April, San Pablo sees average daytime highs of 68°F and overnight lows near 48°F, with 1.4 in of rain across 4.9 wet days and about 13 hours of daylight. It is the 7th-warmest and 6th-wettest month of the year here.

Highs climb over the month, from about 66°F in the first days to 72°F by the end. The sky is clear or mostly clear about 46% of the time in April, and the air most often feels dry.

Daylight stretches from about 12 h 24 min at the start of April to 13 h 30 min by month's end. Set against the rest of the year, April is San Pablo's 7th-clearest and 5th-windiest month. For the whole year in context, see San Pablo's year-round climate.

Daytime high
68°
7th warmest
Overnight low
48°
6th coldest
Rainfall
1.4 in
4.9 wet days
Daylight
13 hours
5:40 AM – 6:39 PM
Cloud cover
46%
7th clearest
Wind
7 mph
5th windiest
Solar energy
6.16 kWh/m²
Travel score
7.3
out of 10

San Pablo is city in Contra Costa County, California, United States.

Density
4,457/km²
people per km²
Founded
1948

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

Temperature in April

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 66°F in the first days to 72°F by the end.

A typical April day in San Pablo reaches about 68°F in the afternoon and slips back to 48°F overnight — a 20°F spread between the day's warmth and the night's chill. On most days the high lands between 59°F and 79°F. Set against its neighbours, April runs about 4°F warmer than March and about 5°F cooler than May.

40°50°60°70°80°151015202530
Avg high (°F)Avg low (°F)
16647
26647
36647
46647
56647
66647
76647
86647
96747
106747
116747
126747
136748
146848
156848
166848
176948
186948
196949
206949
217049
227049
237049
247149
257149
267150
277150
287250
297250
307250

San Pablo weather by month

How April compares with the rest of the year at a glance. April is the 7th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan57° / 42°4.09.39.74.2
Feb61° / 44°4.28.810.55.0
Mar64° / 46°3.18.711.76.1
Apr68° / 48°1.44.9137.3
May74° / 52°0.73148.4
Jun79° / 55°0.20.814.68.9
Jul80° / 56°0.00.114.49.0
Aug81° / 56°0.00.213.58.9
Sep81° / 55°0.10.412.38.8
Oct75° / 52°0.93118.5
Nov65° / 46°1.95.69.96.5
Dec57° / 42°3.79.39.44.3

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 46% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 15% of April, with mostly cloudy or overcast conditions the remaining 39%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15545
25644
35644
45644
55743
65743
75842
85842
95842
106040
116040
126040
136139
146040
156139
166238
176238
186337
196337
206337
216436
226436
236535
246535
256535
266535
276535
286634
296634
306634

Chance of precipitation in April

Any precipitation

San Pablo gets around 1.4 in of rain over 4.9 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 17% and peaks near 21% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%151015202530
Rain chance (%)
121
220
320
420
520
620
720
820
920
1020
1120
1220
1319
1419
1518
1617
1717
1816
1915
2015
2114
2214
2313
2413
2513
2612
2712
2812
2912
3012

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 98% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)
1991
2991
3991
4991
5991
6991
7991
8991
9982
10982
11982
12982
13982
14982
15982
16982
17982
18982
19982
20982
21982
22982
23982
24982
25982
26982
27982
28982
29982
30982

Wind in April

Winds average 7 mph in April.

Across April, 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
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

Sunrise & sunset in April

DaylightNight

Daylight runs from about 12 h 24 min at the start of April to 13 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 66 minutes over April. Sunrise moves from 6:03 AM to 5:21 AM, and sunset from 6:25 PM to 6:52 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.46:036:25
212.46:016:26
312.46:006:27
412.55:586:28
512.55:576:29
612.65:556:30
712.65:546:31
812.75:526:32
912.75:516:32
1012.75:496:33
1112.85:486:34
1212.85:466:35
1312.95:456:36
1412.95:436:37
1512.95:426:38
1613.05:406:39
1713.05:396:40
1813.15:376:41
1913.15:366:42
2013.15:346:43
2113.25:336:44
2213.25:326:45
2313.35:306:46
2413.35:296:47
2513.35:286:47
2613.45:266:48
2713.45:256:49
2813.45:246:50
2913.55:226:51
3013.55:216:52

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 6.16 kWh/m².

For context, solar energy here swings from a low near 2.13 kWh/m² to a high of 7.96 kWh/m² in June across the year — April's 6.16 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.4Bright
25.5Bright
35.5Bright
45.6Bright
55.6Bright
65.7Bright
75.7Bright
85.8Bright
95.8Bright
105.9Bright
115.9Bright
126.0Bright
136.0Intense
146.1Intense
156.1Intense
166.2Intense
176.2Intense
186.3Intense
196.3Intense
206.4Intense
216.4Intense
226.5Intense
236.5Intense
246.6Intense
256.6Intense
266.6Intense
276.7Intense
286.7Intense
296.8Intense
306.8Intense
Planning a trip in April

Hazard calendar for San Pablo

In seasonPeak

None of San Pablo's seasonal hazards are active in April. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

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

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

Is April a good time to visit San Pablo?

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

7.3
Sightseeing
7th-best month of the year
4.0
Beach & pool
7th-best month of the year

April is one of the better times to visit San Pablo for general sightseeing.

What to pack for San Pablo in April

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

In April, San Pablo sees daytime highs around 68°F and nights near 48°F. Pack sun protection. About 5 days see rain.

sun protection

Sea temperature near San Pablo in April

The nearest coast averages about 53°F in April — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 16 mi away) is warmest in September at about 58°F and coldest in April near 53°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
Jan53Bracing
Feb53Bracing
Mar54Bracing
Apr53Bracing
May53Bracing
Jun54Bracing
Jul56Bracing
Aug58Bracing
Sep58Bracing
Oct57Bracing
Nov55Bracing
Dec54Bracing

UV index in San Pablo in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks around 6 — 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 Pablo peaks around July 11 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 highHighModerateJul 11UV 10Dec 15UV 2
UV index (midday)Level
Jan2Moderate
Feb4Moderate
Mar5Moderate
Apr6High
May8Very high
Jun10Extreme
Jul10Extreme
Aug10Very high
Sep6High
Oct5High
Nov2Moderate
Dec2Low

Air quality in San Pablo in April

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in San Pablo is worst in September — around 29 µg/m³ PM2.5 (moderate), about 4.2× the cleanest month (June, 7 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateSep 1829 µg/m³Jun 127 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb13Moderate
Mar13Moderate
Apr10Good
May8Good
Jun7Good
Jul10Good
Aug25Moderate
Sep29Moderate
Oct27Moderate
Nov16Moderate
Dec12Good
Location & terrain

Where is San Pablo?

San Pablo sits at 38.0°N, 122.3°W, 52 ft above sea level, in United States. The nearest listed city is Richmond, 1.9 mi away.

Topography around San Pablo

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

Within 2 miles, the terrain around San Pablo has only modest variations in elevation — a maximum elevation change of 686 ft around an average of 98 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 2,126 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 4,190 ft.

The land around San Pablo is covered by artificial surfaces (65%) within 2 miles, water (50%) within 10 miles, and water (33%), grassland (25%) and trees (22%) within 50 miles.

2 miles
686 ft
10 miles
2,126 ft
50 miles
4,190 ft
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
April weather nearby: Richmond 1.9 mi · El Cerrito 3.7 mi · Pinole 3.7 mi · Hercules 5.0 mi · Albany 5.6 mi · Berkeley 7.5 mi · San Rafael 9.9 mi · Orinda 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 Pablo (37.9622°, -122.3455°, elevation 52 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).