Portland weather in June

In June, Portland sees average daytime highs of 65°F and overnight lows near 56°F, with 4.0 in of rain across 10.3 wet days and about 15.2 hours of daylight. It is the 4th-warmest and 6th-wettest month of the year here.

Highs climb over the month, from about 61°F in the first days to 69°F by the end. The sky is clear or mostly clear about 26% of the time in June, and the air most often feels dry.

Daylight stretches from about 15 hours at the start of June to 15 h 12 min by month's end. Set against the rest of the year, June is Portland's 10th-clearest and 10th-windiest month. For the whole year in context, see Portland's year-round climate.

Daytime high
65°
4th warmest
Overnight low
56°
9th coldest
Rainfall
4.0 in
10.3 wet days
Daylight
15 h 12 min
4:04 AM – 7:18 PM
Cloud cover
64%
10th clearest
Wind
8 mph
10th windiest
Solar energy
5.9 kWh/m²
Travel score
5.7
out of 10

Portland is seat of Cumberland County, and largest city in State of Maine, United States.

Density
372/km²
people per km²
Founded
1632

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

Temperature in June

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 61°F in the first days to 69°F by the end.

A typical June day in Portland reaches about 65°F in the afternoon and slips back to 56°F overnight — a 8°F spread between the day's warmth and the night's chill. On most days the high lands between 58°F and 72°F. Set against its neighbours, June runs about 9°F warmer than May and about 6°F cooler than July.

40°50°60°70°80°151015202530
Avg high (°F)Avg low (°F)
16152
26152
36153
46253
56253
66253
76254
86354
96354
106355
116455
126455
136456
146556
156556
166557
176557
186657
196658
206658
216758
226759
236759
246859
256860
266860
276960
286960
296961
306961

How June really feels in Portland

Once humidity and wind are folded in, June 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

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

Portland weather by month

How June compares with the rest of the year at a glance. June is the 4th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan32° / 20°3.99.96.99.10.0
Feb33° / 21°3.68.96.510.20.0
Mar38° / 28°4.610.95.611.60.0
Apr47° / 38°4.710.71.913.21.6
May56° / 47°3.9110.114.53.7
Jun65° / 56°4.010.3015.25.7
Jul71° / 63°3.19.2014.96.7
Aug71° / 63°3.28.4013.86.9
Sep65° / 57°3.78.7012.36.2
Oct56° / 47°5.410.60.210.83.8
Nov46° / 37°4.510.41.49.51.3
Dec37° / 28°4.9115.88.80.0

Cloud cover in June

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 26% of the time in June.

Beyond those clear spells, partly cloudy skies cover about 18% of June, with mostly cloudy or overcast conditions the remaining 57%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14060
24060
33961
43961
53961
63961
73961
84060
94060
104060
114159
124258
134357
144456
154456
164456
174555
184555
194555
204654
214753
224753
234753
244753
254753
264852
274852
284852
294951
304951

Chance of precipitation in June

Any precipitation

Portland gets around 4.0 in of rain over 10.3 wet days in June. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 34% and peaks near 34% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
134
234
334
434
534
634
734
834
934
1034
1134
1233
1333
1433
1534
1634
1734
1834
1934
2034
2134
2234
2334
2434
2533
2633
2733
2832
2932
3032

Humidity in June

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, June lands in the dry band about 57% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1851320
2841420
3831520
4821530
5811630
6801730
7781840
8771940
9752050
10732160
11722260
12692470
13672580
14652690
156128110
165829121
175531131
185232151
194933161
204635181
214336191
224037212
233838232
243539242
253239263
263040273
272840294
282640304
292441315
302241325

Wind in June

Winds average 8 mph in June.

Across June, daily wind ranges from about 8 mph on the calmest days to 9 mph at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (mph)Feels
19light breeze
29light breeze
39light breeze
49light breeze
59light breeze
69light breeze
78light breeze
88light breeze
98light breeze
108light breeze
118light breeze
128light breeze
138light breeze
148light breeze
158light breeze
168light breeze
178light breeze
188light breeze
198light breeze
208light breeze
218light breeze
228light breeze
238light breeze
248light breeze
258light breeze
268light breeze
278light breeze
288light breeze
298light breeze
308light breeze

Sunrise & sunset in June

DaylightNight

Daylight runs from about 15 hours at the start of June to 15 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over June. Sunrise moves from 4:09 AM to 4:07 AM, and sunset from 7:09 PM to 7:21 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
115.04:097:09
215.04:087:09
315.04:087:10
415.14:077:11
515.14:077:12
615.14:067:12
715.14:067:13
815.14:067:14
915.24:057:15
1015.24:057:15
1115.24:057:16
1215.24:057:16
1315.24:047:17
1415.24:047:17
1515.24:047:18
1615.24:047:18
1715.24:047:19
1815.24:047:19
1915.34:047:19
2015.34:047:20
2115.34:057:20
2215.34:057:20
2315.34:057:20
2415.34:057:21
2515.34:067:21
2615.34:067:21
2715.24:067:21
2815.24:077:21
2915.24:077:21
3015.24:077:21

Solar energy in June

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in June, about 5.9 kWh/m².

For context, solar energy here swings from a low near 1.46 kWh/m² to a high of 6.02 kWh/m² in July across the year — June's 5.9 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.7Bright
25.7Bright
35.7Bright
45.7Bright
55.8Bright
65.8Bright
75.8Bright
85.8Bright
95.8Bright
105.8Bright
115.9Bright
125.9Bright
135.9Bright
145.9Bright
156.0Bright
166.0Bright
176.0Intense
186.0Intense
196.0Intense
206.0Intense
216.1Intense
226.1Intense
236.1Intense
246.1Intense
256.1Intense
266.1Intense
276.1Intense
286.1Intense
296.1Intense
306.1Intense
Planning a trip in June

Hazard calendar for Portland

In seasonPeak

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

Portland 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 June a good time to visit Portland?

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

5.7
Sightseeing
4th-best month of the year
2.2
Beach & pool
4th-best month of the year

June is a reasonable time to visit Portland for sightseeing.

What to pack for Portland in June

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

In June, Portland sees daytime highs around 65°F and nights near 56°F. Worth packing: rain gear and sun protection. About 10 days see rain.

rain gearsun protection

Sea temperature near Portland in June

The nearest coast averages about 55°F in June — 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 63°F and coldest in March near 38°F.

The water stays below 68°F all year — cool enough that most swimmers want a wetsuit.

40°50°60°70°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°F)Comfort
Jan42Bracing
Feb39Bracing
Mar38Bracing
Apr42Bracing
May48Bracing
Jun55Bracing
Jul62Cool
Aug63Cool
Sep60Cool
Oct54Bracing
Nov49Bracing
Dec45Bracing

UV index in Portland in June

LowModerateHighVery highExtreme

Clear-sky midday UV in June 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 Portland peaks around July 12 at about 7 (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 7 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateModerateLowJul 12UV 7Dec 23UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar4Moderate
Apr5Moderate
May7High
Jun7High
Jul7Very high
Aug4Moderate
Sep6High
Oct3Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Portland?

Portland sits at 43.7°N, 70.3°W, 62 ft above sea level, in United States. The nearest listed city is South Portland, 1.2 mi away.

Topography around Portland

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

Within 2 miles, the terrain around Portland has only modest variations in elevation — a maximum elevation change of 180 ft around an average of 30 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 548 ft; within 50 miles, large variations in elevation — a maximum elevation change of 2,352 ft.

The land around Portland is covered by water (40%), artificial surfaces (31%) and trees (21%) within 2 miles, trees (43%) and water (39%) within 10 miles, and trees (61%) and water (33%) within 50 miles.

2 miles
180 ft
10 miles
548 ft
50 miles
2,352 ft
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
June weather nearby: South Portland 1.2 mi · South Portland Gardens 3.1 mi · Westbrook 5.6 mi · West Scarborough 8.7 mi · Saco 14 mi · Biddeford 15 mi · Brunswick 23 mi · Sanford 30 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 Portland (43.6574°, -70.2589°, elevation 62 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).