Penonomé weather in September

In September, Penonomé sees average daytime highs of 29°C and overnight lows near 23°C, with 295 mm of rain across 29.6 wet days and about 12 hours of daylight. It is the 4th-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 0% of the time in September, and the air most often feels oppressive.

Daylight stretches from about 12 h 12 min at the start of September to 11 h 54 min by month's end. Set against the rest of the year, September is Penonomé's 9th-clearest and 12th-windiest month. For the whole year in context, see Penonomé's year-round climate.

Daytime high
29°
4th warmest
Overnight low
23°
7th coldest
Rainfall
295 mm
29.6 wet days
Daylight
12 hours
6:14 AM – 6:17 PM
Cloud cover
93%
9th clearest
Wind
6 km/h
12th windiest
Solar energy
4.34 kWh/m²
Travel score
2.8
out of 10

Penonomé is city in Panama.

Founded
1581

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 29°C through the month.

A typical September day in Penonomé reaches about 29°C in the afternoon and slips back to 23°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 30°C. Set against its neighbours, September runs on par with August and on par with October.

20°23°25°28°30°151015202530
Avg high (°C)Avg low (°C)
12923
22923
32923
42923
52923
62923
72923
82923
92923
102923
112923
122923
132923
142923
152923
162923
172923
182923
192923
202923
212923
222923
232923
242923
252923
262923
272923
282923
292923
302923

How September really feels in Penonomé

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

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

Penonomé 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
Jan28° / 23°3111.911.66.2
Feb28° / 22°20811.76.4
Mar29° / 23°259.111.95.9
Apr29° / 23°8716.312.24.5
May29° / 24°23028.312.43.0
Jun29° / 23°2802912.52.9
Jul29° / 23°26929.812.42.9
Aug29° / 23°29030.412.32.9
Sep29° / 23°29529.6122.8
Oct28° / 23°29929.711.83.0
Nov28° / 23°29026.611.63.7
Dec28° / 23°10919.811.54.9

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 0% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 2% of September, with mostly cloudy or overcast conditions the remaining 98%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1298
2298
3298
4298
5298
6298
7298
8298
9298
10298
11298
12298
13298
14298
15298
16298
17298
18298
19298
20298
21298
22298
23298
24298
25397
26397
27397
28397
29397
30397

Chance of precipitation in September

Any precipitation

Penonomé gets around 295 mm of rain over 29.6 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 98% and peaks near 99% on the wettest days.

0%20%40%60%80%100%151015202530
Rain chance (%)
198
299
399
499
598
698
798
898
998
1098
1198
1298
1398
1498
1599
1699
1799
1899
1999
2099
2199
2299
2399
2499
2598
2698
2798
2898
2998
3097

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the oppressive band about 98% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Oppressive (%)Miserable (%)
1991
2991
3991
4991
5991
6991
7991
8991
9991
10982
11982
12982
13982
14982
15982
16982
17982
18973
19973
20973
21973
22973
23973
24973
25973
26973
27973
28973
29973
30982

Wind in September

Winds average 6 km/h in September, the calmest month.

Across September, daily wind ranges from about 6 km/h on the calmest days to 6 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
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 12 min at the start of September to 11 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 18 minutes over September. Sunrise moves from 6:16 AM to 6:13 AM, and sunset from 6:26 PM to 6:09 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.26:166:26
212.26:166:26
312.16:166:25
412.16:166:24
512.16:166:24
612.16:166:23
712.16:166:23
812.16:156:22
912.16:156:21
1012.16:156:21
1112.16:156:20
1212.16:156:20
1312.16:156:19
1412.16:156:18
1512.16:146:18
1612.06:146:17
1712.06:146:17
1812.06:146:16
1912.06:146:15
2012.06:146:15
2112.06:146:14
2212.06:146:13
2312.06:136:13
2412.06:136:12
2512.06:136:12
2612.06:136:11
2712.06:136:10
2811.96:136:10
2911.96:136:09
3011.96:136:09

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.34 kWh/m².

For context, solar energy here swings from a low near 3.78 kWh/m² to a high of 5.66 kWh/m² in March across the year — September's 4.34 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
14.3Bright
24.3Bright
34.3Bright
44.3Bright
54.3Bright
64.3Bright
74.3Bright
84.3Bright
94.3Bright
104.3Bright
114.3Bright
124.3Bright
134.3Bright
144.3Bright
154.3Bright
164.3Bright
174.3Bright
184.3Bright
194.4Bright
204.4Bright
214.4Bright
224.4Bright
234.4Bright
244.4Bright
254.4Bright
264.4Bright
274.4Bright
284.4Bright
294.4Bright
304.4Bright
Planning a trip in September

Hazard calendar for Penonomé

In seasonPeak

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

Penonomé's rainy season runs May–November, when most of the year's rain falls.

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

Is September a good time to visit Penonomé?

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

2.8
Sightseeing
12th-best month of the year
3.5
Beach & pool
12th-best month of the year

September is a weaker month for outdoor sightseeing in Penonomé.

What to pack for Penonomé in September

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

In September, Penonomé sees daytime highs around 29°C and nights near 23°C. Pack light clothes and rain gear. About 30 days see rain.

light clothesrain gear

Sea temperature near Penonomé in September

The nearest coast averages about 29°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 30 km away) is warmest in June at about 29°C and coldest in March near 26°C.

The water stays above 20°C all year — warm enough for a swim any month.

24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan27Warm
Feb26Warm
Mar26Warm
Apr27Warm
May29Tropical
Jun29Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov28Tropical
Dec28Tropical

UV index in Penonomé in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Penonomé peaks around March 17 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 17UV 13Dec 16UV 10
UV index (midday)Level
Jan11Extreme
Feb13Extreme
Mar13Extreme
Apr13Extreme
May13Extreme
Jun13Extreme
Jul12Extreme
Aug12Extreme
Sep12Extreme
Oct12Extreme
Nov11Extreme
Dec10Very high

Air quality in Penonomé in September

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Penonomé is worst in April — around 23 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (November, 12 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateModerateApr 1923 µg/m³Nov 1212 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb16Moderate
Mar18Moderate
Apr23Moderate
May21Moderate
Jun19Moderate
Jul22Moderate
Aug17Moderate
Sep14Moderate
Oct12Moderate
Nov12Good
Dec13Moderate
Location & terrain

Where is Penonomé?

Penonomé sits at 8.5°N, 80.4°W, 90 m above sea level, in Panama. The nearest listed city is La Chorrera, 75 km away.

La ChorreraSantiago de VeraguasVeracruzArraijánBalboaEl ChorrilloAncónCurundú

Topography around Penonomé

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

Within 3 km, the terrain around Penonomé has only modest variations in elevation — a maximum elevation change of 229 m around an average of 85 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 676 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,872 m.

The land around Penonomé is covered by trees (53%) and grassland (28%) within 3 km, trees (58%) and grassland (36%) within 16 km, and trees (46%), water (30%) and grassland (20%) within 80 km.

3 km
229 m
16 km
676 m
80 km
1,872 m
treesgrasslandcroplandartificial surfacesbare terrainwatermangroves
September weather nearby: La Chorrera 75 km · Santiago de Veraguas 83 km · Veracruz 91 km · Arraiján 92 km · Balboa 99 km · El Chorrillo 101 km · Ancón 101 km · Curundú 102 km

Panama travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type A / B
110 V · 60 Hz
Prices
≈ 45% of US
price level, 2025
GDP per capita
$19,790
2025
Happiness
6.5 / 10
World Happiness, 2025
Homicide rate
11.7
per 100k, 2023
Road deaths
13.9
per 100k/yr, 2019
Income group
High
World Bank
English
Low
EF EPI 491
Religion
Evangelical 55%Roman Catholic 33%none 10%

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 Penonomé (8.5189°, -80.3573°, elevation 90 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. 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).