Garden Grove weather in May

In May, Garden Grove sees average daytime highs of 71°F and overnight lows near 58°F, with 0.3 in of rain across 1.5 wet days and about 13.7 hours of daylight. It is the 6th-warmest and 8th-wettest month of the year here.

Day-to-day highs hold fairly steady near 71°F through the month. The sky is clear or mostly clear about 59% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 18 min at the start of May to 14 h 06 min by month's end. Set against the rest of the year, May is Garden Grove's 7th-clearest and 1st-windiest month. For the whole year in context, see Garden Grove's year-round climate.

Daytime high
71°
6th warmest
Overnight low
58°
7th coldest
Rainfall
0.3 in
1.5 wet days
Daylight
13 h 42 min
4:56 AM – 6:40 PM
Cloud cover
36%
7th clearest
Wind
6 mph
1st windiest
Solar energy
7.29 kWh/m²
Travel score
8.3
out of 10

Garden Grove is city in Orange County, California, United States.

Density
3,767/km²
people per km²
Founded
1874

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

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 71°F through the month.

A typical May day in Garden Grove reaches about 71°F in the afternoon and slips back to 58°F overnight — a 13°F spread between the day's warmth and the night's chill. On most days the high lands between 65°F and 79°F. Set against its neighbours, May runs about 2°F warmer than April and about 3°F cooler than June.

50°60°70°80°151015202531
Avg high (°F)Avg low (°F)
17157
27157
37157
47157
57157
67157
77157
87158
97158
107158
117158
127158
137158
147158
157158
167158
177158
187158
197158
207158
217158
227158
237158
247158
257159
267159
277159
287159
297159
307259
317259

Garden Grove weather by month

How May compares with the rest of the year at a glance. May is the 6th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan64° / 49°2.85.2106.8
Feb65° / 50°3.16.110.76.7
Mar66° / 53°1.85.111.77.0
Apr69° / 55°0.72.612.87.9
May71° / 58°0.31.513.78.3
Jun74° / 61°0.10.314.29.1
Jul79° / 64°0.10.4149.0
Aug81° / 65°0.00.113.38.9
Sep80° / 64°0.10.512.28.8
Oct76° / 60°0.61.911.18.8
Nov70° / 54°0.72.410.28.1
Dec65° / 49°1.94.99.86.9

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 59% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 17% of May, with mostly cloudy or overcast conditions the remaining 24%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17228
27228
37228
47228
57228
67228
77228
87327
97327
107426
117426
127525
137525
147525
157723
167723
177723
187723
197723
207723
217723
227723
237822
247822
257822
267921
277921
288020
298020
308020
318119

Chance of precipitation in May

Any precipitation

Garden Grove gets around 0.3 in of rain over 1.5 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 5% and peaks near 7% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
17
27
37
47
57
67
77
87
97
107
117
126
136
146
156
166
175
185
195
205
214
224
234
243
253
263
273
282
292
302
312

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the dry band about 58% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
172271
271281
370291
468311
567321
666331
766331
865341
964351
1063361
1162371
1261381
1361381
1460391
1558402
1658402
1758402
1857412
1957412
2056422
2155432
2253443
2352453
2451463
2550473
2649483
2747493
2846504
2944524
3043534
3141554

Wind in May

Winds average 6 mph in May, the windiest month of the year.

Across May, daily wind ranges from about 6 mph on the calmest days to 6 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 18 min at the start of May to 14 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 48 minutes over May. Sunrise moves from 5:09 AM to 4:47 AM, and sunset from 6:29 PM to 6:51 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.35:096:29
213.45:086:30
313.45:076:30
413.45:066:31
513.45:056:32
613.55:046:33
713.55:036:33
813.55:026:34
913.65:016:35
1013.65:006:36
1113.65:006:37
1213.64:596:37
1313.74:586:38
1413.74:576:39
1513.74:566:40
1613.74:566:40
1713.84:556:41
1813.84:546:42
1913.84:546:43
2013.84:536:43
2113.94:526:44
2213.94:526:45
2313.94:516:46
2413.94:516:46
2513.94:506:47
2614.04:496:48
2714.04:496:48
2814.04:496:49
2914.04:486:50
3014.04:486:50
3114.14:476:51

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 7.29 kWh/m².

For context, solar energy here swings from a low near 2.98 kWh/m² to a high of 7.89 kWh/m² in June across the year — May's 7.29 kWh/m² falls in the middle.

02468151015202531
Solar energy (kWh/m²)Level
17.1Intense
27.1Intense
37.1Intense
47.1Intense
57.1Intense
67.1Intense
77.2Intense
87.2Intense
97.2Intense
107.2Intense
117.2Intense
127.2Intense
137.2Intense
147.3Intense
157.3Intense
167.3Intense
177.3Intense
187.3Intense
197.3Intense
207.3Intense
217.3Intense
227.4Intense
237.4Intense
247.4Intense
257.4Intense
267.5Intense
277.5Intense
287.5Intense
297.5Intense
307.6Intense
317.6Intense
Planning a trip in May

Is May a good time to visit Garden Grove?

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

8.3
Sightseeing
6th-best month of the year
5.5
Beach & pool
6th-best month of the year

May is one of the better times to visit Garden Grove for general sightseeing.

What to pack for Garden Grove in May

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

In May, Garden Grove sees daytime highs around 71°F and nights near 58°F. Pack sun protection.

sun protection

Sea temperature near Garden Grove in May

The nearest coast averages about 63°F in May — 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 August at about 69°F and coldest in February near 59°F.

It's comfortable for a long swim from Jul 13 to Sep 28 — about 2.6 months when the water holds above 68°F.

60°65°70°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingcomfortable to swim
Sea temperature (°F)Comfort
Jan59Cool
Feb59Cool
Mar59Cool
Apr60Cool
May63Cool
Jun65Cool
Jul68Refreshing
Aug69Refreshing
Sep69Refreshing
Oct67Cool
Nov64Cool
Dec60Cool

UV index in Garden Grove in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Garden Grove peaks around June 23 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJun 23UV 10Dec 17UV 3
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar5Moderate
Apr7Very high
May8Very high
Jun10Extreme
Jul10Extreme
Aug10Extreme
Sep8Very high
Oct6High
Nov3Moderate
Dec3Moderate

Air quality in Garden Grove in May

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Garden Grove is worst in September — around 49 µg/m³ PM2.5 (poor), about 4.0× the cleanest month (May, 12 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateSep 1447 µg/m³May 1713 µg/m³
PM2.5 (µg/m³)Level
Jan18Moderate
Feb19Moderate
Mar19Moderate
Apr17Moderate
May12Moderate
Jun17Moderate
Jul19Moderate
Aug32Moderate
Sep49Poor
Oct21Moderate
Nov21Moderate
Dec18Moderate
Location & terrain

Where is Garden Grove?

Garden Grove sits at 33.8°N, 117.9°W, 89 ft above sea level, in United States. The nearest listed city is Stanton, 3.7 mi away.

Topography around Garden Grove

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

Within 2 miles, the terrain around Garden Grove has only modest variations in elevation — a maximum elevation change of 98 ft around an average of 89 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,070 ft; within 50 miles, extreme variations in elevation — a maximum elevation change of 10,013 ft.

The land around Garden Grove is covered by artificial surfaces (95%) within 2 miles, artificial surfaces (79%) within 10 miles, and water (35%) and artificial surfaces (25%) within 50 miles.

2 miles
98 ft
10 miles
1,070 ft
50 miles
10,013 ft
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Stanton 3.7 mi · Westminster 3.7 mi · Anaheim 4.3 mi · Fountain Valley 4.3 mi · Santa Ana 5.0 mi · Orange 5.0 mi · Cypress 6.2 mi · Fullerton 6.8 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 Garden Grove (33.7739°, -117.9415°, elevation 89 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).