Esperanza weather in September

In September, Esperanza sees average daytime highs of 37°C and overnight lows near 25°C, with 82 mm of rain across 9.9 wet days and about 12.2 hours of daylight. It is the 4th-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 37°C through the month. The sky is clear or mostly clear about 66% of the time in September, and the air most often feels miserable.

Daylight stretches from about 12 h 36 min at the start of September to 11 h 48 min by month's end. Set against the rest of the year, September is Esperanza's 8th-clearest and 11th-windiest month. For the whole year in context, see Esperanza's year-round climate.

Daytime high
37°
4th warmest
Overnight low
25°
10th coldest
Rainfall
82 mm
9.9 wet days
Daylight
12 h 12 min
6:09 AM – 6:19 PM
Cloud cover
34%
8th clearest
Wind
7 km/h
11th windiest
Solar energy
5.73 kWh/m²
Travel score
1.7
out of 10

Esperanza is town in Cajeme Municipality, State of Sonora, Mexico.

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 37°C through the month.

A typical September day in Esperanza reaches about 37°C in the afternoon and slips back to 25°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 33°C and 40°C. Set against its neighbours, September runs on par with August and about 1°C warmer than October.

20°25°30°35°40°45°151015202530
Avg high (°C)Avg low (°C)
13726
23726
33726
43726
53726
63726
73726
83726
93726
103726
113726
123726
133725
143725
153725
163725
173725
183725
193725
203725
213725
223725
233725
243724
253724
263724
273724
283724
293724
303724

How September really feels in Esperanza

Once humidity and wind are folded in, September averages 30 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
30
30 feel dangerously hot (≥ 39°C)
Days feeling ≤ C
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.

Esperanza weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan26° / 10°121.910.58.4
Feb27° / 11°161.8117.9
Mar30° / 12°70.711.86.4
Apr33° / 15°10.212.64.5
May36° / 18°10.213.32.4
Jun39° / 24°91.113.70.9
Jul38° / 27°579.713.60.8
Aug37° / 27°8413.3131.2
Sep37° / 25°829.912.21.7
Oct36° / 20°262.711.32.9
Nov31° / 14°181.910.65.9
Dec26° / 10°172.110.38.2

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 66% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 12% of September, with mostly cloudy or overcast conditions the remaining 21%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16436
26535
36733
46733
56832
66931
77030
87228
97228
107426
117525
127624
137822
147822
157921
168020
178119
188218
198317
208416
218515
228515
238614
248614
258713
268713
278812
288911
298911
309010

Chance of precipitation in September

Any precipitation

Esperanza gets around 82 mm of rain over 9.9 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 33% and peaks near 46% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
146
246
345
445
544
644
743
842
942
1041
1140
1239
1338
1437
1536
1634
1733
1831
1930
2028
2126
2225
2323
2422
2520
2619
2718
2817
2916
3015

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the miserable band about 50% of days. Sticky, muggy-or-worse air turns up on roughly 93% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
100222373
200222472
300222472
400222571
500222670
600222670
700222769
800232867
901232965
1001233064
1101243162
1201243261
1301253359
1401353457
1501363555
1601373653
1701483749
1802483847
1902593944
20126104041
21126114139
22127124236
23128134234
24139144331
25139154329
261310154327
271411164324
282412184222
292513184219
303615194117

Wind in September

Winds average 7 km/h in September.

Across September, daily wind ranges from about 6 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 36 min at the start of September to 11 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 48 minutes over September. Sunrise moves from 6:02 AM to 6:16 AM, and sunset from 6:37 PM to 6:02 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.66:026:37
212.56:036:36
312.56:036:34
412.56:046:33
512.56:046:32
612.46:056:31
712.46:056:30
812.46:056:29
912.46:066:27
1012.36:066:26
1112.36:076:25
1212.36:076:24
1312.26:086:23
1412.26:086:21
1512.26:096:20
1612.26:096:19
1712.16:106:18
1812.16:106:16
1912.16:116:15
2012.06:116:14
2112.06:126:13
2212.06:126:12
2312.06:136:10
2411.96:136:09
2511.96:136:08
2611.96:146:07
2711.96:146:06
2811.86:156:04
2911.86:156:03
3011.86:166:02

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.73 kWh/m².

For context, solar energy here swings from a low near 3.93 kWh/m² to a high of 8.12 kWh/m² in May across the year — September's 5.73 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.8Bright
25.8Bright
35.8Bright
45.8Bright
55.8Bright
65.8Bright
75.7Bright
85.7Bright
95.7Bright
105.7Bright
115.7Bright
125.7Bright
135.7Bright
145.7Bright
155.7Bright
165.7Bright
175.7Bright
185.7Bright
195.7Bright
205.7Bright
215.7Bright
225.7Bright
235.7Bright
245.7Bright
255.7Bright
265.7Bright
275.7Bright
285.7Bright
295.7Bright
305.7Bright
Planning a trip in September

Hazard calendar for Esperanza

In seasonPeak

In September, Esperanza sits inside its pacific hurricane season. The full year is below, with each hazard's peak months called out.

Esperanza sits in the eastern Pacific hurricane zone; the season peaks August–September.

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

Is September a good time to visit Esperanza?

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

1.7
Sightseeing
9th-best month of the year
4.6
Beach & pool
9th-best month of the year

September is a weaker month for outdoor sightseeing in Esperanza.

What to pack for Esperanza in September

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

In September, Esperanza sees daytime highs around 37°C and nights near 25°C. Pack light clothes. Worth having: rain gear and sun protection. About 10 days see rain.

light clothesrain gearsun protection

Sea temperature near Esperanza in September

The nearest coast averages about 30°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 54 km away) is warmest in August at about 30°C and coldest in February near 19°C.

It's comfortable for a long swim from Mar 29 to Dec 28 — about 9 months when the water holds above 20°C.

15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan19Cool
Feb19Cool
Mar19Cool
Apr21Refreshing
May24Warm
Jun27Warm
Jul29Tropical
Aug30Tropical
Sep30Tropical
Oct28Tropical
Nov24Warm
Dec21Refreshing

UV index in Esperanza in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September 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 Esperanza peaks around July 14 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 4 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecHighVery highExtremeVery highHighModerateJul 14UV 12Dec 20UV 4
UV index (midday)Level
Jan5Moderate
Feb6High
Mar8Very high
Apr10Extreme
May11Extreme
Jun12Extreme
Jul12Extreme
Aug11Extreme
Sep10Very high
Oct7Very high
Nov6High
Dec4Moderate
Location & terrain

Where is Esperanza?

Esperanza sits at 27.6°N, 109.9°W, 46 m above sea level, in Mexico. The nearest listed city is Ciudad Obregón, 11 km away.

HermosilloMiguel Alemán (La Doce)

Topography around Esperanza

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Esperanza.

Within 3 km, the terrain around Esperanza has only modest variations in elevation — a maximum elevation change of 29 m around an average of 37 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 708 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,278 m.

The land around Esperanza is covered by cropland (31%) and artificial surfaces (23%) within 3 km, shrubs (51%) and cropland (23%) within 16 km, and shrubs (48%) within 80 km.

3 km
29 m
16 km
708 m
80 km
1,278 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwatermangroves
September weather nearby: Ciudad Obregón 11 km · Navojoa 74 km · Huatabampo 89 km · Empalme 97 km · Heroica Guaymas 102 km · San Carlos 117 km · Hermosillo 196 km · Miguel Alemán (La Doce) 206 km

Mexico travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type A / B
120 / 127 V · 60 Hz
Prices
≈ 54% of US
price level, 2025
GDP per capita
$13,889
2025
Happiness
7.0 / 10
World Happiness, 2025
Safe drinking water
43%
of population, 2024
Homicide rate
24.9
per 100k, 2023
Road deaths
12.8
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Very low
EF EPI 440
Religion
Catholic 78%no religion 11%other Evangelical Churches 8%Jehovah Witness 1%

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 Esperanza (27.5805°, -109.9312°, elevation 46 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. 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).