Lake Havasu City weather in September

In September, Lake Havasu City sees average daytime highs of 98°F and overnight lows near 76°F, with 0.4 in of rain across 1.9 wet days and about 12.2 hours of daylight. It is the 4th-warmest and 7th-wettest month of the year here.

Highs ease over the month, from about 102°F in the first days to 94°F by the end. The sky is clear or mostly clear about 84% of the time in September, and the air most often feels dry.

Daylight stretches from about 12 h 48 min at the start of September to 11 h 42 min by month's end. Set against the rest of the year, September is Lake Havasu City's 2nd-clearest and 8th-windiest month. For the whole year in context, see Lake Havasu City's year-round climate.

Daytime high
98°
4th warmest
Overnight low
76°
9th coldest
Rainfall
0.4 in
1.9 wet days
Daylight
12 h 12 min
6:25 AM – 6:38 PM
Cloud cover
17%
2nd clearest
Wind
5 mph
8th windiest
Solar energy
6.22 kWh/m²
Travel score
2.2
out of 10

Lake Havasu City is city in Mohave County, Arizona, United States.

Density
447/km²
people per km²
Founded
1978

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 102°F in the first days to 94°F by the end.

A typical September day in Lake Havasu City reaches about 98°F in the afternoon and slips back to 76°F overnight — a 23°F spread between the day's warmth and the night's chill. On most days the high lands between 90°F and 105°F. Set against its neighbours, September runs about 6°F cooler than August and about 12°F warmer than October.

60°80°100°151015202530
Avg high (°F)Avg low (°F)
110281
210281
310280
410180
510180
610179
710179
810079
910078
1010078
119977
129977
139977
149976
159876
169875
179875
189874
199774
209774
219773
229673
239673
249672
259672
269571
279571
289471
299470
309470

How September really feels in Lake Havasu City

Once humidity and wind are folded in, September averages 30 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
30
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Lake Havasu City weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan65° / 43°0.93.2107.3
Feb69° / 47°1.13.710.77.7
Mar76° / 53°0.62.311.78.5
Apr83° / 59°0.21.212.87.5
May92° / 68°0.10.513.84.5
Jun101° / 77°0.00.214.31.1
Jul105° / 84°0.31.914.10.0
Aug104° / 83°0.42.413.30.1
Sep98° / 76°0.41.912.22.2
Oct86° / 62°0.41.611.16.4
Nov73° / 50°0.51.410.28.6
Dec64° / 43°0.72.79.77.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 84% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 8% of September, with mostly cloudy or overcast conditions the remaining 8%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
19010
29010
39010
49010
5919
6919
7928
8928
9928
10937
11937
12937
13937
14946
15946
16946
17946
18946
19946
20937
21937
22937
23937
24937
25937
26937
27919
28919
29919
30919

Chance of precipitation in September

Any precipitation

Lake Havasu City gets around 0.4 in of rain over 1.9 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 6% and peaks near 10% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%151015202530
Rain chance (%)
110
210
310
410
510
610
79
89
98
108
117
127
136
146
156
165
175
185
194
204
214
224
234
244
254
264
274
284
294
304

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the dry band about 76% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
156171782
257171781
358161781
459161771
561151671
661151671
764141561
864141561
967131451
1068131351
1170121251
1272121141
1374111041
147610941
157710841
16819730
17829630
18848530
19858430
20867430
21867430
22886330
23886330
24895330
25895330
26904330
27904330
28904330
29914320
30914320

Wind in September

Winds average 5 mph in September.

Across September, daily wind ranges from about 5 mph on the calmest days to 6 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
126calm
136calm
146calm
156calm
166calm
176calm
186calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 48 min at the start of September to 11 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 66 minutes over September. Sunrise moves from 6:14 AM to 6:36 AM, and sunset from 7:00 PM to 6:17 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.86:147:00
212.76:156:58
312.76:166:57
412.66:166:55
512.66:176:54
612.66:186:53
712.56:196:51
812.56:196:50
912.56:206:48
1012.46:216:47
1112.46:226:45
1212.46:226:44
1312.36:236:42
1412.36:246:41
1512.26:256:39
1612.26:256:38
1712.26:266:37
1812.16:276:35
1912.16:276:34
2012.16:286:32
2112.06:296:31
2212.06:306:29
2312.06:306:28
2411.96:316:26
2511.96:326:25
2611.86:336:23
2711.86:336:22
2811.86:346:20
2911.76:356:19
3011.76:366:17

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.22 kWh/m².

For context, solar energy here swings from a low near 3.08 kWh/m² to a high of 8.53 kWh/m² in June across the year — September's 6.22 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
16.6Intense
26.6Intense
36.5Intense
46.5Intense
56.5Intense
66.5Intense
76.4Intense
86.4Intense
96.4Intense
106.4Intense
116.3Intense
126.3Intense
136.3Intense
146.3Intense
156.3Intense
166.2Intense
176.2Intense
186.2Intense
196.1Intense
206.1Intense
216.1Intense
226.0Intense
236.0Intense
246.0Bright
255.9Bright
265.9Bright
275.8Bright
285.8Bright
295.8Bright
305.7Bright
Planning a trip in September

Is September a good time to visit Lake Havasu City?

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

2.2
Sightseeing
9th-best month of the year
5.7
Beach & pool
6th-best month of the year

September is a weaker month for outdoor sightseeing in Lake Havasu City.

What to pack for Lake Havasu City in September

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

In September, Lake Havasu City sees daytime highs around 98°F and nights near 76°F. Pack light clothes and sun protection.

light clothessun protection

UV index in Lake Havasu City in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Lake Havasu City peaks around June 22 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 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 22UV 11Dec 18UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar5Moderate
Apr7High
May8Very high
Jun11Extreme
Jul10Extreme
Aug10Extreme
Sep8Very high
Oct6High
Nov4Moderate
Dec3Moderate
Location & terrain

Where is Lake Havasu City?

Lake Havasu City sits at 34.5°N, 114.3°W, 738 ft above sea level, in United States. The nearest listed city is Bullhead City, 48 mi away.

Topography around Lake Havasu City

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

Within 2 miles, the terrain around Lake Havasu City has only modest variations in elevation — a maximum elevation change of 705 ft around an average of 735 ft above sea level; within 10 miles, very significant variations in elevation — a maximum elevation change of 4,590 ft; within 50 miles, extreme variations in elevation — a maximum elevation change of 7,995 ft.

The land around Lake Havasu City is covered by artificial surfaces (75%) within 2 miles, bare terrain (74%) within 10 miles, and bare terrain (66%) and shrubs (28%) within 50 miles.

2 miles
705 ft
10 miles
4,590 ft
50 miles
7,995 ft
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Bullhead City 48 mi · Kingman 51 mi · Blythe 62 mi · Twentynine Palms 102 mi · Prescott 106 mi · Boulder City 107 mi · Henderson 114 mi · Prescott Valley 114 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 Lake Havasu City (34.4839°, -114.3225°, elevation 738 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. 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).