Onda weather in September

In September, Onda sees average daytime highs of 26°C and overnight lows near 16°C, with 56 mm of rain across 8.4 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 2nd-wettest month of the year here.

Highs ease over the month, from about 28°C in the first days to 24°C by the end. The sky is clear or mostly clear about 45% of the time in September, and the air most often feels humid.

Daylight stretches from about 12 h 54 min at the start of September to 11 h 36 min by month's end. Set against the rest of the year, September is Onda's 9th-clearest and 9th-windiest month. For the whole year in context, see Onda's year-round climate.

Daytime high
26°
4th warmest
Overnight low
16°
9th coldest
Rainfall
56 mm
8.4 wet days
Daylight
12 h 18 min
6:48 AM – 7:03 PM
Cloud cover
47%
9th clearest
Wind
8 km/h
9th windiest
Solar energy
4.8 kWh/m²
Travel score
7.1
out of 10

Onda is capital town of the municipality of Onda, Spain.

Air quality
Good
PM10 19.6 µg/m³ · 2019

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 28°C in the first days to 24°C by the end.

A typical September day in Onda reaches about 26°C in the afternoon and slips back to 16°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 29°C. Set against its neighbours, September runs about 3°C cooler than August and about 4°C warmer than October.

10°15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12818
22818
32818
42818
52718
62718
72718
82717
92717
102717
112717
122717
132617
142617
152616
162616
172616
182616
192616
202516
212516
222515
232515
242515
252515
262515
272515
282415
292415
302414

Onda 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 daysSnow daysDaylight (hours)Travel score
Jan14° / 3550.59.54.8
Feb15° / 294.70.510.45.3
Mar17° / 415.70.111.76.4
Apr19° / 538.30136.6
May23° / 13°527.7014.27.2
Jun26° / 17°345.4014.87.6
Jul29° / 19°163014.56.8
Aug29° / 19°336.2013.66.2
Sep26° / 16°568.4012.37.1
Oct22° / 13°567.2010.97.2
Nov17° / 435.609.86.3
Dec14° / 345.60.49.24.9

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 45% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 20% of September, with mostly cloudy or overcast conditions the remaining 35%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16832
26832
36733
46733
56733
66733
76733
86733
96634
106634
116634
126535
136535
146535
156535
166436
176337
186337
196238
206337
216238
226238
236238
246337
256337
266436
276436
286634
296634
306634

Chance of precipitation in September

Any precipitation

Onda gets around 56 mm of rain over 8.4 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 27% and peaks near 30% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
130
230
330
430
530
629
729
828
928
1027
1127
1226
1326
1426
1526
1626
1726
1826
1927
2027
2127
2227
2327
2426
2526
2625
2725
2824
2924
3023

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the humid band about 34% of days. Sticky, muggy-or-worse air turns up on roughly 15% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1102133342
2112233322
3112334302
4122335282
5132335272
6142336251
7162436231
8172437221
9182437201
10202437191
11212437170
12222437160
13242437150
14252437140
15272337130
16282337120
17292337110
18312436100
1932243690
2033253580
2134253470
2235263360
2335273350
2436283240
2537293140
2638302930
2739302830
2840312720
2941322520
3043322410

Wind in September

Winds average 8 km/h in September.

Across September, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 54 min at the start of September to 11 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 78 minutes over September. Sunrise moves from 6:33 AM to 7:01 AM, and sunset from 7:28 PM to 6:39 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.96:337:28
212.96:347:27
312.86:357:25
412.86:367:24
512.76:377:22
612.76:387:20
712.76:397:19
812.66:407:17
912.66:417:15
1012.56:427:13
1112.56:437:12
1212.46:447:10
1312.46:457:08
1412.36:467:07
1512.36:477:05
1612.36:487:03
1712.26:497:01
1812.26:507:00
1912.16:516:58
2012.16:526:56
2112.06:526:55
2212.06:536:53
2311.96:546:51
2411.96:556:49
2511.96:566:48
2611.86:576:46
2711.86:586:44
2811.76:596:43
2911.77:006:41
3011.67:016:39

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.8 kWh/m².

For context, solar energy here swings from a low near 2.08 kWh/m² to a high of 7.16 kWh/m² in June across the year — September's 4.8 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.4Bright
25.4Bright
35.3Bright
45.3Bright
55.3Bright
65.2Bright
75.2Bright
85.1Bright
95.1Bright
105.1Bright
115.0Bright
125.0Bright
134.9Bright
144.9Bright
154.9Bright
164.8Bright
174.8Bright
184.7Bright
194.7Bright
204.6Bright
214.6Bright
224.6Bright
234.5Bright
244.5Bright
254.4Bright
264.4Bright
274.4Bright
284.3Bright
294.3Bright
304.3Bright
Planning a trip in September

Is September a good time to visit Onda?

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

7.1
Sightseeing
4th-best month of the year
6.9
Beach & pool
4th-best month of the year

September is one of the better times to visit Onda for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Onda in September

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

In September, Onda sees daytime highs around 26°C and nights near 16°C. Worth packing: light clothes, rain gear and sun protection. About 8 days see rain.

light clothesrain gearsun protection

Sea temperature near Onda in September

The nearest coast averages about 25°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 15 km away) is warmest in August at about 26°C and coldest in February near 14°C.

It's comfortable for a long swim from Jun 1 to Nov 2 — about 5.1 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb14Bracing
Mar14Bracing
Apr16Cool
May18Cool
Jun22Refreshing
Jul25Warm
Aug26Warm
Sep25Warm
Oct22Refreshing
Nov19Cool
Dec16Cool

UV index in Onda in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Onda peaks around July 15 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateLowJul 15UV 10Dec 19UV 2
UV index (midday)Level
Jan2Moderate
Feb3Moderate
Mar6High
Apr7Very high
May6High
Jun9Very high
Jul10Very high
Aug9Very high
Sep7High
Oct4Moderate
Nov3Moderate
Dec2Low
Location & terrain

Where is Onda?

Onda sits at 40.0°N, 0.3°W, 192 m above sea level, in Spain. The nearest listed city is Vila-real, 14 km away.

Topography around Onda

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

Within 3 km, the terrain around Onda has significant variations in elevation — a maximum elevation change of 469 m around an average of 206 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,084 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,022 m.

The land around Onda is covered by trees (59%) within 3 km, trees (66%) within 16 km, and trees (35%) and water (27%) within 80 km.

3 km
469 m
16 km
1,084 m
80 km
2,022 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Vila-real 14 km · Almassora 17 km · Burriana 17 km · Castelló de la Plana 18 km · Moncofa 20 km · El Grao 23 km · Benicàssim 29 km · Sagunto 31 km

Spain travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 65% of US
price level, 2025
GDP per capita
$38,627
2025
Happiness
6.5 / 10
World Happiness, 2025
Safe drinking water
99%
of population, 2024
Homicide rate
0.7
per 100k, 2023
Road deaths
3.9
per 100k/yr, 2019
Income group
High
World Bank
English
Moderate
EF EPI 540
Religion
Roman Catholic 58%atheist 16%agnostic 11%non-believer 11%

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 Onda (39.965°, -0.2604°, elevation 192 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).