Pasadena weather in April

In April, Pasadena sees average daytime highs of 78°F and overnight lows near 61°F, with 3.8 in of rain across 8.9 wet days and about 12.7 hours of daylight. It is the 7th-warmest and 8th-wettest month of the year here.

Highs climb over the month, from about 76°F in the first days to 81°F by the end. The sky is clear or mostly clear about 33% of the time in April, and the air most often feels muggy.

Daylight stretches from about 12 h 18 min at the start of April to 13 h 06 min by month's end. Set against the rest of the year, April is Pasadena's 6th-clearest and 1st-windiest month. For the whole year in context, see Pasadena's year-round climate.

Daytime high
78°
7th warmest
Overnight low
61°
6th coldest
Rainfall
3.8 in
8.9 wet days
Daylight
12 h 42 min
6:00 AM – 6:43 PM
Cloud cover
55%
6th clearest
Wind
9 mph
1st windiest
Solar energy
5.44 kWh/m²
Travel score
6.9
out of 10

Pasadena is city southeast of Houston, belonging to Harris County, Texas, United States.

Density
1,341/km²
people per km²
Founded
1893

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 76°F in the first days to 81°F by the end.

A typical April day in Pasadena reaches about 78°F in the afternoon and slips back to 61°F overnight — a 17°F spread between the day's warmth and the night's chill. On most days the high lands between 71°F and 84°F. Set against its neighbours, April runs about 6°F warmer than March and about 7°F cooler than May.

40°60°80°151015202530
Avg high (°F)Avg low (°F)
17558
27558
37658
47658
57659
67659
77659
87659
97759
107759
117760
127760
137760
147860
157860
167861
177861
187861
197961
207962
217962
228062
238062
248063
258063
268063
278164
288164
298164
308164

How April really feels in Pasadena

Once humidity and wind are folded in, April averages 0 days that feel above 90°F and 0 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F
0
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

April sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Pasadena weather by month

How April compares with the rest of the year at a glance. April is the 7th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan63° / 45°4.21010.35.6
Feb66° / 49°3.3910.96.1
Mar72° / 55°3.79.211.86.8
Apr78° / 61°3.88.912.76.9
May85° / 69°3.59.813.55.5
Jun89° / 74°4.512.813.93.8
Jul91° / 76°3.612.713.73.3
Aug92° / 75°3.913.313.13.2
Sep88° / 71°4.611.812.24.4
Oct81° / 62°4.18.711.36.8
Nov71° / 53°4.18.310.57.0
Dec65° / 47°4.29.610.15.9

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 33% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 17% of April, with mostly cloudy or overcast conditions the remaining 49%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14654
24654
34753
44852
54852
64852
74951
84951
94951
104951
115050
125149
135149
145248
155149
165149
175149
185248
195248
205248
215248
225248
235248
245248
255248
265248
275248
285248
295248
305248

Chance of precipitation in April

Any precipitation

Pasadena gets around 3.8 in of rain over 8.9 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 30% and peaks near 33% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
132
233
333
432
532
632
732
831
931
1031
1130
1230
1330
1429
1529
1629
1729
1829
1929
2029
2129
2229
2329
2429
2528
2628
2728
2828
2927
3027

Humidity in April

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, April lands in the muggy band about 28% of days. Sticky, muggy-or-worse air turns up on roughly 38% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1361620244
2361620244
3351620244
4351520245
5351521245
6341521245
7341521246
8331521256
9331522256
10321522256
11321522266
12311422276
13301422276
14291422287
15281422297
16271422297
17261422308
18261421318
19251521319
20241520329
212315203210
222315193211
232215193212
242115183213
252015183214
262015173215
271915173217
281914173218
291914163120
301813163121

Wind in April

Winds average 9 mph in April, the windiest month of the year.

Across April, daily wind ranges from about 9 mph on the calmest days to 9 mph at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (mph)Feels
19light breeze
29light breeze
39light breeze
49light breeze
59light breeze
69light breeze
79light breeze
89light breeze
99light breeze
109light breeze
119light breeze
129light breeze
139light breeze
149light breeze
159light breeze
169light breeze
179light breeze
189light breeze
199light breeze
209light breeze
219light breeze
229light breeze
239light breeze
249light breeze
259light breeze
269light breeze
279light breeze
289light breeze
299light breeze
309light breeze

Sunrise & sunset in April

DaylightNight

Daylight runs from about 12 h 18 min at the start of April to 13 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 48 minutes over April. Sunrise moves from 6:17 AM to 5:45 AM, and sunset from 6:34 PM to 6:51 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.36:176:34
212.36:166:34
312.36:156:35
412.46:146:35
512.46:136:36
612.46:116:37
712.46:106:37
812.56:096:38
912.56:086:38
1012.56:076:39
1112.66:056:39
1212.66:046:40
1312.66:036:41
1412.76:026:41
1512.76:016:42
1612.76:006:43
1712.75:586:43
1812.85:576:44
1912.85:566:44
2012.85:556:45
2112.95:546:46
2212.95:536:46
2312.95:526:47
2412.95:516:48
2513.05:506:48
2613.05:496:49
2713.05:486:49
2813.15:476:50
2913.15:466:51
3013.15:456:51

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 5.44 kWh/m².

For context, solar energy here swings from a low near 2.6 kWh/m² to a high of 6.21 kWh/m² in July across the year — April's 5.44 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
14.9Bright
24.9Bright
35.0Bright
45.0Bright
55.1Bright
65.1Bright
75.1Bright
85.2Bright
95.2Bright
105.3Bright
115.3Bright
125.3Bright
135.4Bright
145.4Bright
155.5Bright
165.5Bright
175.5Bright
185.5Bright
195.6Bright
205.6Bright
215.6Bright
225.7Bright
235.7Bright
245.7Bright
255.7Bright
265.7Bright
275.8Bright
285.8Bright
295.8Bright
305.8Bright
Planning a trip in April

Hazard calendar for Pasadena

In seasonPeak

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

Pasadena sits in the Atlantic hurricane belt; the season peaks August–October.

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

Is April a good time to visit Pasadena?

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

6.9
Sightseeing
2nd-best month of the year
6.5
Beach & pool
3rd-best month of the year

April is a reasonable time to visit Pasadena for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Pasadena in April

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

In April, Pasadena sees daytime highs around 78°F and nights near 61°F. Worth packing: light clothes, rain gear and sun protection. About 9 days see rain.

light clothesrain gearsun protection

Sea temperature near Pasadena in April

The nearest coast averages about 71°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 39 mi away) is warmest in August at about 86°F and coldest in January near 59°F.

It's comfortable for a long swim from Apr 3 to Nov 25 — about 7.8 months when the water holds above 68°F.

60°70°80°90°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°F)Comfort
Jan59Cool
Feb60Cool
Mar64Cool
Apr71Refreshing
May78Warm
Jun83Tropical
Jul85Tropical
Aug86Tropical
Sep84Tropical
Oct78Warm
Nov70Refreshing
Dec63Cool

UV index in Pasadena in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April 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 Pasadena peaks around July 20 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 4 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJul 20UV 11Dec 21UV 4
UV index (midday)Level
Jan4Moderate
Feb6High
Mar6High
Apr10Very high
May10Extreme
Jun10Extreme
Jul11Extreme
Aug11Extreme
Sep8Very high
Oct6High
Nov5Moderate
Dec4Moderate

Air quality in Pasadena 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 Pasadena is worst in July — around 24 µg/m³ PM2.5 (moderate), about 2.5× the cleanest month (December, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1523 µg/m³Dec 2010 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb10Good
Mar12Moderate
Apr12Moderate
May16Moderate
Jun20Moderate
Jul24Moderate
Aug18Moderate
Sep15Moderate
Oct11Good
Nov10Good
Dec10Good
Location & terrain

Where is Pasadena?

Pasadena sits at 29.7°N, 95.2°W, 30 ft above sea level, in United States. The nearest listed city is South Houston, 2.5 mi away.

Topography around Pasadena

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

Within 2 miles, the terrain around Pasadena has only modest variations in elevation — a maximum elevation change of 56 ft around an average of 33 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 259 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 371 ft.

The land around Pasadena is covered by artificial surfaces (48%) and trees (39%) within 2 miles, artificial surfaces (39%) and trees (37%) within 10 miles, and trees (39%) and grassland (24%) within 50 miles.

2 miles
56 ft
10 miles
259 ft
50 miles
371 ft
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
April weather nearby: South Houston 2.5 mi · Deer Park 5.0 mi · Cloverleaf 6.2 mi · Channelview 8.1 mi · Pearland 9.9 mi · Houston 11 mi · Friendswood 11 mi · La Porte 12 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 Pasadena (29.6911°, -95.2091°, elevation 30 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). 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).