Nadi weather in September

In September, Nadi sees average daytime highs of 27°C and overnight lows near 21°C, with 78 mm of rain across 9.2 wet days and about 11.9 hours of daylight. It is the 9th-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 39% of the time in September, and the air most often feels muggy.

Daylight stretches from about 11 h 36 min at the start of September to 12 h 06 min by month's end. Set against the rest of the year, September is Nadi's 3rd-clearest and 4th-windiest month. For the whole year in context, see Nadi's year-round climate.

Daytime high
27°
9th warmest
Overnight low
21°
3rd coldest
Rainfall
78 mm
9.2 wet days
Daylight
11 h 54 min
7:08 AM – 7:02 PM
Cloud cover
53%
3rd clearest
Wind
8 km/h
4th windiest
Solar energy
5.4 kWh/m²
Travel score
6.7
out of 10

Nadi is town in Ba Province, Fiji.

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 27°C through the month.

A typical September day in Nadi reaches about 27°C in the afternoon and slips back to 21°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 29°C. Set against its neighbours, September runs on par with August and about 1°C cooler than October.

15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12720
22720
32720
42720
52720
62720
72720
82721
92721
102721
112721
122721
132721
142721
152721
162721
172721
182721
192721
202721
212721
222721
232721
242721
252721
262821
272821
282821
292821
302821

How September really feels in Nadi

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.

Nadi weather by month

How September compares with the rest of the year at a glance. September is the 9th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 24°30823.512.93.6
Feb29° / 24°28721.712.63.5
Mar29° / 24°27524.512.13.6
Apr29° / 23°17516.811.64.7
May28° / 22°818.311.26.5
Jun27° / 21°666.3117.1
Jul27° / 20°404.9117.6
Aug27° / 20°746.311.47.3
Sep27° / 21°789.211.96.7
Oct28° / 22°12313.312.45.7
Nov29° / 23°14316.312.84.7
Dec29° / 24°21020.8134.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 39% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 19% of September, with mostly cloudy or overcast conditions the remaining 42%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16238
26238
36238
46238
56238
66238
76238
86238
96238
106139
116139
126040
136040
145941
155842
165842
175743
185743
195644
205545
215446
225446
235446
245446
255446
265446
275347
285347
295446
305446

Chance of precipitation in September

Any precipitation

Nadi gets around 78 mm of rain over 9.2 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 30% and peaks near 33% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
122
223
324
424
525
626
726
827
928
1029
1129
1230
1331
1431
1532
1632
1733
1833
1933
2033
2133
2233
2333
2433
2533
2632
2732
2833
2933
3033

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the muggy band about 48% of days. Sticky, muggy-or-worse air turns up on roughly 68% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1114274315
2113274315
3113274316
4112274416
5112274417
6111274418
7110264518
8110264519
909264619
1008254720
1107254720
1207254820
1306244921
1405244921
1505245021
1605245021
1704245121
1804235221
1904235221
2004235221
2104235221
2204235221
2304235221
2405235121
2505235022
2606234922
2706234922
2806234823
2907234724
3007224624

Wind in September

Winds average 8 km/h in September.

Across September, daily wind ranges from about 8 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
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 11 h 36 min at the start of September to 12 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 30 minutes over September. Sunrise moves from 7:21 AM to 6:55 AM, and sunset from 6:59 PM to 7:04 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.67:216:59
211.77:207:00
311.77:197:00
411.77:187:00
511.77:177:00
611.77:167:00
711.77:167:00
811.87:157:01
911.87:147:01
1011.87:137:01
1111.87:127:01
1211.87:117:01
1311.87:107:01
1411.97:097:01
1511.97:097:02
1611.97:087:02
1711.97:077:02
1811.97:067:02
1912.07:057:02
2012.07:047:02
2112.07:037:02
2212.07:027:03
2312.07:017:03
2412.07:017:03
2512.17:007:03
2612.16:597:03
2712.16:587:03
2812.16:577:04
2912.16:567:04
3012.16:557:04

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.4 kWh/m².

For context, solar energy here swings from a low near 3.94 kWh/m² to a high of 6.28 kWh/m² in November across the year — September's 5.4 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.1Bright
25.2Bright
35.2Bright
45.2Bright
55.2Bright
65.2Bright
75.2Bright
85.3Bright
95.3Bright
105.3Bright
115.3Bright
125.3Bright
135.3Bright
145.3Bright
155.4Bright
165.4Bright
175.4Bright
185.4Bright
195.5Bright
205.5Bright
215.5Bright
225.5Bright
235.6Bright
245.6Bright
255.6Bright
265.6Bright
275.7Bright
285.7Bright
295.7Bright
305.7Bright
Planning a trip in September

Hazard calendar for Nadi

In seasonPeak

None of Nadi's seasonal hazards are active in September. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Nadi sits in the South Indian Ocean cyclone belt; the season peaks January–March.

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

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

Is September a good time to visit Nadi?

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

6.7
Sightseeing
4th-best month of the year
6.9
Beach & pool
5th-best month of the year

September is a reasonable time to visit Nadi for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Nadi in September

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

In September, Nadi sees daytime highs around 27°C and nights near 21°C. Pack light clothes. Worth having: rain gear and sun protection. About 9 days see rain.

light clothesrain gearsun protection

Sea temperature near Nadi in September

The nearest coast averages about 26°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in February at about 29°C and coldest in August 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
Jan29Tropical
Feb29Tropical
Mar29Tropical
Apr29Tropical
May28Tropical
Jun27Warm
Jul27Warm
Aug26Warm
Sep26Warm
Oct27Warm
Nov28Warm
Dec28Tropical

UV index in Nadi in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Nadi peaks around February 13 at about 17 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 13 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeFeb 13UV 17Jul 13UV 8
UV index (midday)Level
Jan16Extreme
Feb17Extreme
Mar15Extreme
Apr11Extreme
May9Very high
Jun8Very high
Jul8Very high
Aug9Very high
Sep13Extreme
Oct15Extreme
Nov13Extreme
Dec14Extreme
Location & terrain

Where is Nadi?

Nadi sits at 17.8°S, 177.4°E, 9 m above sea level, in Fiji. The nearest listed city is Lautoka, 21 km away.

LautokaSigatokaLamiSuvaNasinuLevukaLabasa

Topography around Nadi

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

Within 3 km, the terrain around Nadi has only modest variations in elevation — a maximum elevation change of 43 m around an average of 9 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 683 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,286 m.

The land around Nadi is covered by grassland (52%) and trees (31%) within 3 km, trees (37%), water (30%) and grassland (29%) within 16 km, and water (61%) and trees (30%) within 80 km.

3 km
43 m
16 km
683 m
80 km
1,286 m
treesgrasslandcroplandartificial surfaceswatermangroves
September weather nearby: Lautoka 21 km · Sigatoka 39 km · Lami 110 km · Suva 113 km · Nasinu 120 km · Levuka 203 km · Labasa 257 km · Mata-Utu 851 km

Fiji travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type I
240 V · 50 Hz
Prices
≈ 41% of US
price level, 2025
GDP per capita
$6,642
2025
Safe drinking water
42%
of population, 2024
Homicide rate
2.1
per 100k, 2023
Road deaths
13.5
per 100k/yr, 2019
Income group
Upper middle
World Bank
Religion
Protestant 45%Hindu 28%other Christian 10%Roman Catholic 9%

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 Nadi (-17.8031°, 177.4162°, elevation 9 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).