Fairfield weather in August

In August, Fairfield sees average daytime highs of 80°F and overnight lows near 67°F, with 4.1 in of rain across 10.2 wet days and about 13.6 hours of daylight. It is the 2nd-warmest and 5th-wettest month of the year here.

Highs ease over the month, from about 81°F in the first days to 78°F by the end. The sky is clear or mostly clear about 33% of the time in August, and the air most often feels muggy.

Daylight stretches from about 14 h 12 min at the start of August to 13 hours by month's end. Set against the rest of the year, August is Fairfield's 3rd-clearest and 12th-windiest month. For the whole year in context, see Fairfield's year-round climate.

Daytime high
80°
2nd warmest
Overnight low
67°
11th coldest
Rainfall
4.1 in
10.2 wet days
Daylight
13 h 42 min
5:07 AM – 6:47 PM
Cloud cover
57%
3rd clearest
Wind
6 mph
12th windiest
Solar energy
5.35 kWh/m²
Travel score
6.6
out of 10

Fairfield is town in Fairfield County, Connecticut, United States.

Founded
1639

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

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 81°F in the first days to 78°F by the end.

A typical August day in Fairfield reaches about 80°F in the afternoon and slips back to 67°F overnight — a 13°F spread between the day's warmth and the night's chill. On most days the high lands between 73°F and 87°F. Set against its neighbours, August runs about 2°F cooler than July and about 7°F warmer than September.

50°60°70°80°90°151015202531
Avg high (°F)Avg low (°F)
18169
28168
38168
48168
58168
68168
78168
88168
98168
108168
118068
128068
138067
148067
158067
168067
178067
188067
197967
207967
217966
227966
237966
247966
257966
267965
277865
287865
297865
307865
317865

How August really feels in Fairfield

Once humidity and wind are folded in, August averages 0 days that feel above 90°F and 0 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F
0
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

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

Fairfield weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan37° / 26°3.89.55.19.40.0
Feb38° / 26°3.48.94.310.40.0
Mar45° / 33°4.510.73.511.71.1
Apr56° / 42°4.1110.513.13.7
May66° / 52°3.611.5014.35.8
Jun76° / 62°3.810.9014.96.6
Jul82° / 68°3.410.2014.76.4
Aug80° / 67°4.110.2013.66.6
Sep73° / 60°4.09.2012.36.9
Oct62° / 50°4.59.40.110.95.5
Nov51° / 40°3.790.69.72.7
Dec42° / 32°4.710.43.39.10.3

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 33% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 19% of August, with mostly cloudy or overcast conditions the remaining 47%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15347
25347
35347
45347
55347
65347
75248
85248
95149
105149
115149
125050
135149
145149
155149
165149
175248
185248
195446
205446
215446
225446
235545
245545
255446
265446
275545
285446
295446
305446
315446

Chance of precipitation in August

Any precipitation

Fairfield gets around 4.1 in of rain over 10.2 wet days in August. 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 37% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
135
235
335
435
535
635
736
836
937
1037
1137
1237
1337
1437
1537
1636
1736
1835
1934
2033
2132
2231
2330
2429
2528
2628
2727
2827
2927
3026
3127

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the muggy band about 30% of days. Sticky, muggy-or-worse air turns up on roughly 43% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1915263615
2915263515
3915263515
4915263515
51015263415
61015253415
71015253415
81016253316
91016253316
101116253316
111116253215
121117253215
131117253215
141117253115
151117263114
161218263014
171218263014
181218273013
191318272913
201319272912
211419272812
221420272712
231520272711
241621272611
251721272511
261722272410
271822272310
281922262310
292022262210
302023262210
31212325219

Wind in August

Winds average 6 mph in August, the calmest month.

Across August, daily wind ranges from about 6 mph on the calmest days to 7 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 14 h 12 min at the start of August to 13 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 72 minutes over August. Sunrise moves from 4:52 AM to 5:23 AM, and sunset from 7:06 PM to 6:23 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.24:527:06
214.24:537:05
314.24:547:04
414.14:557:03
514.14:567:01
614.14:577:00
714.04:586:59
814.04:596:58
913.95:006:57
1013.95:016:55
1113.95:026:54
1213.85:036:53
1313.85:046:51
1413.75:056:50
1513.75:066:48
1613.75:076:47
1713.65:086:45
1813.65:096:44
1913.55:106:43
2013.55:116:41
2113.45:136:39
2213.45:146:38
2313.45:156:36
2413.35:166:35
2513.35:176:33
2613.25:186:32
2713.25:196:30
2813.15:206:28
2913.15:216:27
3013.15:226:25
3113.05:236:23

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.35 kWh/m².

For context, solar energy here swings from a low near 1.71 kWh/m² to a high of 6.11 kWh/m² in June across the year — August's 5.35 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.7Bright
25.7Bright
35.7Bright
45.6Bright
55.6Bright
65.6Bright
75.6Bright
85.5Bright
95.5Bright
105.5Bright
115.4Bright
125.4Bright
135.4Bright
145.3Bright
155.3Bright
165.3Bright
175.3Bright
185.2Bright
195.2Bright
205.2Bright
215.2Bright
225.2Bright
235.2Bright
245.1Bright
255.1Bright
265.1Bright
275.1Bright
285.0Bright
295.0Bright
305.0Bright
314.9Bright
Planning a trip in August

Hazard calendar for Fairfield

In seasonPeak

In August, Fairfield sits inside its atlantic hurricane season. The full year is below, with each hazard's peak months called out.

Fairfield sits in the Atlantic hurricane belt; the season peaks August–October.

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

Is August a good time to visit Fairfield?

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

6.6
Sightseeing
2nd-best month of the year
6.5
Beach & pool
2nd-best month of the year

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

What to pack for Fairfield in August

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

In August, Fairfield sees daytime highs around 80°F and nights near 67°F. Worth packing: light clothes, rain gear and sun protection. About 10 days see rain.

light clothesrain gearsun protection

Sea temperature near Fairfield in August

The nearest coast averages about 74°F in August — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in August at about 74°F and coldest in February near 35°F.

It's comfortable for a long swim from Jun 30 to Sep 30 — about 3.1 months when the water holds above 68°F.

30°40°50°60°70°80°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°F)Comfort
Jan39Bracing
Feb35Bracing
Mar37Bracing
Apr44Bracing
May55Bracing
Jun65Cool
Jul72Refreshing
Aug74Refreshing
Sep71Refreshing
Oct64Cool
Nov55Bracing
Dec46Bracing

UV index in Fairfield in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Fairfield peaks around July 11 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 23 at about 1 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 11UV 8Dec 23UV 1
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May7Very high
Jun8Very high
Jul8Very high
Aug6High
Sep6High
Oct3Moderate
Nov2Moderate
Dec1Low

Air quality in Fairfield in August

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Fairfield is worst in July — around 20 µg/m³ PM2.5 (moderate), about 1.7× the cleanest month (November, 11 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateJul 1220 µg/m³Nov 1612 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb16Moderate
Mar17Moderate
Apr17Moderate
May18Moderate
Jun19Moderate
Jul20Moderate
Aug17Moderate
Sep16Moderate
Oct13Moderate
Nov11Good
Dec13Moderate
Location & terrain

Where is Fairfield?

Fairfield sits at 41.1°N, 73.3°W, 33 ft above sea level, in United States. The nearest listed city is Bridgeport, 5.0 mi away.

Topography around Fairfield

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Fairfield.

Within 2 miles, the terrain around Fairfield has only modest variations in elevation — a maximum elevation change of 203 ft around an average of 36 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 610 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,913 ft.

The land around Fairfield is covered by trees (47%) and water (24%) within 2 miles, water (47%) and trees (40%) within 10 miles, and trees (55%) and water (32%) within 50 miles.

2 miles
203 ft
10 miles
610 ft
50 miles
1,913 ft
treesgrasslandartificial surfacesbare terrainwaterwetland
August weather nearby: Bridgeport 5.0 mi · Westport 5.0 mi · Stratford 7.5 mi · East Norwalk 7.5 mi · Norwalk 7.5 mi · Trumbull 7.5 mi · Wilton 9.9 mi · Darien 12 mi

United States travel facts

Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 100% of US
price level, 2025
GDP per capita
$90,027
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
5.8
per 100k, 2023
Road deaths
12.7
per 100k/yr, 2019
Income group
High
World Bank
Religion
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

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 Fairfield (41.1412°, -73.2637°, elevation 33 ft), 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).