Negombo weather in July

In July, Negombo sees average daytime highs of 28°C and overnight lows near 26°C, with 176 mm of rain across 24.6 wet days and about 12.4 hours of daylight. It is the 10th-warmest and 6th-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 6% of the time in July, and the air most often feels miserable.

Daylight stretches from about 12 h 24 min at the start of July to 12 h 18 min by month's end. Set against the rest of the year, July is Negombo's 11th-clearest and 2nd-windiest month. For the whole year in context, see Negombo's year-round climate.

Daytime high
28°
10th warmest
Overnight low
26°
9th coldest
Rainfall
176 mm
24.6 wet days
Daylight
12 h 24 min
6:05 AM – 6:28 PM
Cloud cover
81%
11th clearest
Wind
21 km/h
2nd windiest
Solar energy
5.16 kWh/m²
Travel score
3.7
out of 10

Negombo is city in Sri Lanka.

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

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 28°C through the month.

A typical July day in Negombo reaches about 28°C in the afternoon and slips back to 26°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 29°C. Set against its neighbours, July runs on par with June and on par with August.

24°26°28°30°32°151015202531
Avg high (°C)Avg low (°C)
12826
22826
32826
42826
52826
62826
72826
82826
92826
102826
112826
122826
132826
142826
152826
162826
172826
182826
192826
202826
212826
222826
232826
242826
252826
262826
272826
282826
292826
302826
312826

How July really feels in Negombo

Once humidity and wind are folded in, July averages 31 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
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

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

Negombo weather by month

How July compares with the rest of the year at a glance. July is the 10th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 24°386.411.65.8
Feb30° / 25°396.511.85.5
Mar30° / 26°7615.8124.4
Apr30° / 27°1632612.23.2
May29° / 27°25428.612.33.0
Jun29° / 27°2242712.43.2
Jul28° / 26°17624.612.43.7
Aug28° / 26°16423.912.23.9
Sep28° / 26°21525.3123.6
Oct28° / 26°31426.411.83.5
Nov29° / 25°27222.411.73.8
Dec29° / 25°13714.111.65.0

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 6% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 11% of July, with mostly cloudy or overcast conditions the remaining 84%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11882
21882
31882
41783
51783
61783
71783
81783
91783
101684
111684
121585
131585
141585
151486
161486
171585
181585
191585
201585
211585
221585
231585
241684
251684
261684
271783
281783
291882
301882
311981

Chance of precipitation in July

Any precipitation

Negombo gets around 176 mm of rain over 24.6 wet days in July. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 80% and peaks near 84% on the wettest days.

0%20%40%60%80%151015202531
Rain chance (%)
184
284
383
483
582
682
781
881
980
1080
1179
1279
1379
1479
1579
1679
1779
1879
1979
2079
2179
2279
2379
2479
2579
2679
2779
2879
2979
3079
3179

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the miserable band about 94% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
1496
2496
3595
4595
5595
6595
7694
8694
9694
10694
11694
12694
13694
14694
15694
16694
17694
18694
19694
20793
21793
22793
23793
24793
25892
26892
27892
28892
29991
30991
31991

Wind in July

Winds average 21 km/h in July.

Across July, daily wind ranges from about 21 km/h on the calmest days to 21 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
121breezy
221breezy
321breezy
421breezy
521breezy
621breezy
721breezy
821breezy
921breezy
1021breezy
1121breezy
1221breezy
1321breezy
1421breezy
1521breezy
1621breezy
1721breezy
1821breezy
1921breezy
2021breezy
2121breezy
2221breezy
2321breezy
2421breezy
2521breezy
2621breezy
2721breezy
2821breezy
2921breezy
3021breezy
3121breezy

Sunrise & sunset in July

DaylightNight

Daylight runs from about 12 h 24 min at the start of July to 12 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over July. Sunrise moves from 6:02 AM to 6:07 AM, and sunset from 6:26 PM to 6:26 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.46:026:26
212.46:026:27
312.46:026:27
412.46:026:27
512.46:026:27
612.46:036:27
712.46:036:27
812.46:036:27
912.46:036:27
1012.46:046:27
1112.46:046:28
1212.46:046:28
1312.46:046:28
1412.46:046:28
1512.46:056:28
1612.46:056:28
1712.46:056:28
1812.46:056:28
1912.46:056:28
2012.46:066:28
2112.46:066:28
2212.46:066:28
2312.46:066:27
2412.46:066:27
2512.36:066:27
2612.36:066:27
2712.36:076:27
2812.36:076:27
2912.36:076:27
3012.36:076:27
3112.36:076:26

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 5.16 kWh/m².

For context, solar energy here swings from a low near 4.69 kWh/m² to a high of 6.43 kWh/m² in March across the year — July's 5.16 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.1Bright
25.1Bright
35.1Bright
45.2Bright
55.2Bright
65.2Bright
75.2Bright
85.2Bright
95.2Bright
105.2Bright
115.2Bright
125.2Bright
135.1Bright
145.1Bright
155.1Bright
165.1Bright
175.1Bright
185.1Bright
195.2Bright
205.2Bright
215.2Bright
225.2Bright
235.2Bright
245.2Bright
255.2Bright
265.2Bright
275.2Bright
285.2Bright
295.2Bright
305.3Bright
315.3Bright
Planning a trip in July

Hazard calendar for Negombo

In seasonPeak

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

Negombo sits in the North Indian Ocean cyclone zone; the season peaks May and October–November.

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

Is July a good time to visit Negombo?

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

3.7
Sightseeing
7th-best month of the year
4.4
Beach & pool
7th-best month of the year

July is a weaker month for outdoor sightseeing in Negombo.

What to pack for Negombo in July

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

In July, Negombo sees daytime highs around 28°C and nights near 26°C. Pack light clothes and rain gear. Worth having: sun protection and a windbreaker. About 25 days see rain.

light clothesrain gearsun protectiona windbreaker

Sea temperature near Negombo in July

The nearest coast averages about 28°C in July — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in April at about 30°C and coldest in August near 27°C.

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

26°28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan28Warm
Feb28Tropical
Mar29Tropical
Apr30Tropical
May29Tropical
Jun28Tropical
Jul28Warm
Aug27Warm
Sep28Warm
Oct28Tropical
Nov29Tropical
Dec28Tropical

UV index in Negombo in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July 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 Negombo peaks around February 17 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 10 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highFeb 17UV 13Dec 15UV 10
UV index (midday)Level
Jan11Extreme
Feb13Extreme
Mar12Extreme
Apr12Extreme
May12Extreme
Jun11Extreme
Jul12Extreme
Aug13Extreme
Sep13Extreme
Oct12Extreme
Nov10Extreme
Dec10Very high

Air quality in Negombo in July

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Negombo is worst in March — around 30 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (August, 17 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 2030 µg/m³Aug 2417 µg/m³
PM2.5 (µg/m³)Level
Jan23Moderate
Feb23Moderate
Mar30Moderate
Apr28Moderate
May24Moderate
Jun18Moderate
Jul17Moderate
Aug17Moderate
Sep17Moderate
Oct19Moderate
Nov24Moderate
Dec23Moderate
Location & terrain

Where is Negombo?

Negombo sits at 7.2°N, 79.8°E, 8 m above sea level, in Sri Lanka. The nearest listed city is Katunayaka, 7.0 km away.

HendalaWattalaPeliyagodaKelaniya

Topography around Negombo

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

Within 3 km, the terrain around Negombo has only modest variations in elevation — a maximum elevation change of 13 m around an average of 3 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 69 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,554 m.

The land around Negombo is covered by water (52%) and artificial surfaces (28%) within 3 km, water (54%) and trees (37%) within 16 km, and trees (58%) and water (36%) within 80 km.

3 km
13 m
16 km
69 m
80 km
1,554 m
treesgrasslandcroplandartificial surfacesbare terrainwatermangroves
July weather nearby: Katunayaka 7.0 km · Ja Ela 16 km · Kandana 19 km · Welisara 21 km · Hendala 25 km · Wattala 25 km · Peliyagoda 27 km · Kelaniya 30 km

Sri Lanka travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type D / G / M
230 V · 50 Hz
Prices
≈ 27% of US
price level, 2025
GDP per capita
$5,002
2025
Happiness
4.0 / 10
World Happiness, 2025
Safe drinking water
47%
of population, 2024
Homicide rate
3.3
per 100k, 2019
Road deaths
19.7
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Low
EF EPI 486
Religion
Buddhist 70%Hindu 13%Muslim 10%Roman Catholic 6%

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 Negombo (7.2083°, 79.8358°, elevation 8 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. 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).