Mackinac Island weather in May
In May, Mackinac Island sees average daytime highs of 56°F and overnight lows near 43°F, with 2.9 in of precipitation across 10.2 wet days and about 14.7 hours of daylight. It is the 5th-warmest and 6th-wettest month of the year here.
Highs climb over the month, from about 51°F in the first days to 61°F by the end. The sky is clear or mostly clear about 29% of the time in May, and the air most often feels dry.
Daylight stretches from about 14 h 06 min at the start of May to 15 h 12 min by month's end. Set against the rest of the year, May is Mackinac Island's 5th-clearest and 9th-windiest month. For the whole year in context, see Mackinac Island's year-round climate.
- Daytime high
- 56°
- 5th warmest
- Overnight low
- 43°
- 7th coldest
- Precipitation
- 2.9 in
- 10.2 wet days
- Daylight
- 14 h 42 min
- 5:13 AM – 7:56 PM
- Cloud cover
- 60%
- 5th clearest
- Wind
- 9 mph
- 9th windiest
- Solar energy
- 6.08 kWh/m²
- Travel score
- 3.7
- out of 10
Mackinac Island is city located on Mackinac Island in Michigan.
- Founded
- 1671
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in May
Highs climb over the month, from about 51°F in the first days to 61°F by the end.
A typical May day in Mackinac Island reaches about 56°F in the afternoon and slips back to 43°F overnight — a 12°F spread between the day's warmth and the night's chill. On most days the high lands between 47°F and 65°F. Set against its neighbours, May runs about 12°F warmer than April and about 12°F cooler than June.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 50 | 50 | 51 | 51 | 51 | 52 | 52 | 52 | 53 | 53 | 53 | 54 | 54 | 55 | 55 | 55 | 56 | 56 | 57 | 57 | 58 | 58 | 58 | 59 | 59 | 60 | 60 | 61 | 61 | 62 | 62 |
| Avg low (°F) | 38 | 38 | 39 | 39 | 39 | 40 | 40 | 40 | 41 | 41 | 41 | 42 | 42 | 42 | 43 | 43 | 43 | 44 | 44 | 45 | 45 | 46 | 46 | 46 | 47 | 47 | 48 | 48 | 48 | 49 | 49 |
| Avg high (°F) | Avg low (°F) | |
|---|---|---|
| 1 | 50 | 38 |
| 2 | 50 | 38 |
| 3 | 51 | 39 |
| 4 | 51 | 39 |
| 5 | 51 | 39 |
| 6 | 52 | 40 |
| 7 | 52 | 40 |
| 8 | 52 | 40 |
| 9 | 53 | 41 |
| 10 | 53 | 41 |
| 11 | 53 | 41 |
| 12 | 54 | 42 |
| 13 | 54 | 42 |
| 14 | 55 | 42 |
| 15 | 55 | 43 |
| 16 | 55 | 43 |
| 17 | 56 | 43 |
| 18 | 56 | 44 |
| 19 | 57 | 44 |
| 20 | 57 | 45 |
| 21 | 58 | 45 |
| 22 | 58 | 46 |
| 23 | 58 | 46 |
| 24 | 59 | 46 |
| 25 | 59 | 47 |
| 26 | 60 | 47 |
| 27 | 60 | 48 |
| 28 | 61 | 48 |
| 29 | 61 | 48 |
| 30 | 62 | 49 |
| 31 | 62 | 49 |
How May really feels in Mackinac Island
Once humidity and wind are folded in, May averages 0 days that feel above 90°F and 2 that feel at or below 32°F — the comfort signal a plain temperature reading hides.
The story in May is cold — wind chill drags the overnight "feels like" below the raw low.
Mackinac Island weather by month
How May compares with the rest of the year at a glance. May is the 5th-warmest and 6th-wettest month here — the current month is highlighted below.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 24° / 14° | 1.9 | 9.9 | 10.9 | 8.9 | 0.0 |
| Feb | 24° / 13° | 1.6 | 7.4 | 7.3 | 10.1 | 0.0 |
| Mar | 33° / 21° | 2.0 | 8.4 | 6.1 | 11.6 | 0.0 |
| Apr | 44° / 32° | 2.9 | 9.7 | 3.2 | 13.3 | 0.9 |
| May | 56° / 43° | 2.9 | 10.2 | 0.3 | 14.7 | 3.7 |
| Jun | 68° / 55° | 3.0 | 10 | 0 | 15.5 | 6.3 |
| Jul | 74° / 62° | 3.3 | 10.9 | 0 | 15.2 | 6.9 |
| Aug | 73° / 62° | 3.4 | 10 | 0 | 13.9 | 6.9 |
| Sep | 66° / 55° | 3.5 | 11.4 | 0 | 12.3 | 5.9 |
| Oct | 54° / 44° | 3.7 | 13.5 | 0.2 | 10.7 | 3.0 |
| Nov | 42° / 34° | 2.6 | 11.6 | 5.7 | 9.3 | 0.5 |
| Dec | 32° / 24° | 2.3 | 11.3 | 11.3 | 8.5 | 0.0 |
Cloud cover in May
The sky is clear or mostly clear about 29% of the time in May.
Beyond those clear spells, partly cloudy skies cover about 15% of May, with mostly cloudy or overcast conditions the remaining 55%.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 46 | 45 | 45 | 45 | 44 | 44 | 44 | 44 | 44 | 43 | 43 | 42 | 42 | 42 | 43 | 43 | 43 | 44 | 44 | 44 | 45 | 46 | 46 | 46 | 47 | 47 | 46 | 46 | 46 | 46 | 46 |
| Cloudier (%) | 54 | 55 | 55 | 55 | 56 | 56 | 56 | 56 | 56 | 57 | 57 | 58 | 58 | 58 | 57 | 57 | 57 | 56 | 56 | 56 | 55 | 54 | 54 | 54 | 53 | 53 | 54 | 54 | 54 | 54 | 54 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 46 | 54 |
| 2 | 45 | 55 |
| 3 | 45 | 55 |
| 4 | 45 | 55 |
| 5 | 44 | 56 |
| 6 | 44 | 56 |
| 7 | 44 | 56 |
| 8 | 44 | 56 |
| 9 | 44 | 56 |
| 10 | 43 | 57 |
| 11 | 43 | 57 |
| 12 | 42 | 58 |
| 13 | 42 | 58 |
| 14 | 42 | 58 |
| 15 | 43 | 57 |
| 16 | 43 | 57 |
| 17 | 43 | 57 |
| 18 | 44 | 56 |
| 19 | 44 | 56 |
| 20 | 44 | 56 |
| 21 | 45 | 55 |
| 22 | 46 | 54 |
| 23 | 46 | 54 |
| 24 | 46 | 54 |
| 25 | 47 | 53 |
| 26 | 47 | 53 |
| 27 | 46 | 54 |
| 28 | 46 | 54 |
| 29 | 46 | 54 |
| 30 | 46 | 54 |
| 31 | 46 | 54 |
Chance of precipitation in May
Mackinac Island gets around 2.9 in of rain and snow over 10.2 wet days in May. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable precipitation averages around 32% and peaks near 34% on the wettest days, and about 0 day brings snow.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 29 | 30 | 30 | 30 | 30 | 30 | 30 | 31 | 31 | 31 | 32 | 32 | 32 | 33 | 33 | 33 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 33 | 33 | 33 | 33 |
| Snow chance (%) | 4 | 4 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Rain chance (%) | Snow chance (%) | |
|---|---|---|
| 1 | 29 | 4 |
| 2 | 30 | 4 |
| 3 | 30 | 3 |
| 4 | 30 | 3 |
| 5 | 30 | 3 |
| 6 | 30 | 2 |
| 7 | 30 | 2 |
| 8 | 31 | 2 |
| 9 | 31 | 2 |
| 10 | 31 | 1 |
| 11 | 32 | 1 |
| 12 | 32 | 1 |
| 13 | 32 | 1 |
| 14 | 33 | 1 |
| 15 | 33 | 1 |
| 16 | 33 | 1 |
| 17 | 34 | 1 |
| 18 | 34 | 0 |
| 19 | 34 | 0 |
| 20 | 34 | 0 |
| 21 | 34 | 0 |
| 22 | 34 | 0 |
| 23 | 34 | 0 |
| 24 | 34 | 0 |
| 25 | 34 | 0 |
| 26 | 34 | 0 |
| 27 | 34 | 0 |
| 28 | 33 | 0 |
| 29 | 33 | 0 |
| 30 | 33 | 0 |
| 31 | 33 | 0 |
Humidity in May
Most of May feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, May lands in the dry band about 96% of days. It rarely turns muggy — the humid and sticky bands barely register.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 98 | 98 | 97 | 96 | 96 | 95 | 94 | 93 | 92 | 92 | 91 | 90 | 89 | 88 | 88 |
| Comfortable (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 3 | 3 | 3 | 4 | 5 | 5 | 6 | 6 | 7 | 7 | 8 | 9 | 9 |
| Humid (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 3 |
| Dry (%) | Comfortable (%) | Humid (%) | |
|---|---|---|---|
| 1 | 100 | 0 | 0 |
| 2 | 100 | 0 | 0 |
| 3 | 100 | 0 | 0 |
| 4 | 100 | 0 | 0 |
| 5 | 100 | 0 | 0 |
| 6 | 100 | 0 | 0 |
| 7 | 100 | 0 | 0 |
| 8 | 99 | 1 | 0 |
| 9 | 99 | 1 | 0 |
| 10 | 99 | 1 | 0 |
| 11 | 99 | 1 | 0 |
| 12 | 99 | 1 | 0 |
| 13 | 99 | 1 | 0 |
| 14 | 99 | 1 | 0 |
| 15 | 99 | 1 | 0 |
| 16 | 99 | 1 | 0 |
| 17 | 98 | 2 | 0 |
| 18 | 98 | 2 | 0 |
| 19 | 97 | 3 | 0 |
| 20 | 96 | 3 | 1 |
| 21 | 96 | 3 | 1 |
| 22 | 95 | 4 | 1 |
| 23 | 94 | 5 | 1 |
| 24 | 93 | 5 | 2 |
| 25 | 92 | 6 | 2 |
| 26 | 92 | 6 | 2 |
| 27 | 91 | 7 | 2 |
| 28 | 90 | 7 | 3 |
| 29 | 89 | 8 | 3 |
| 30 | 88 | 9 | 3 |
| 31 | 88 | 9 | 3 |
Wind in May
Winds average 9 mph in May.
Across May, daily wind ranges from about 9 mph on the calmest days to 9 mph at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (mph) | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 |
| Feels | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze |
| Wind speed (mph) | Feels | |
|---|---|---|
| 1 | 9 | light breeze |
| 2 | 9 | light breeze |
| 3 | 9 | light breeze |
| 4 | 9 | light breeze |
| 5 | 9 | light breeze |
| 6 | 9 | light breeze |
| 7 | 9 | light breeze |
| 8 | 9 | light breeze |
| 9 | 9 | light breeze |
| 10 | 9 | light breeze |
| 11 | 9 | light breeze |
| 12 | 9 | light breeze |
| 13 | 9 | light breeze |
| 14 | 9 | light breeze |
| 15 | 9 | light breeze |
| 16 | 9 | light breeze |
| 17 | 9 | light breeze |
| 18 | 9 | light breeze |
| 19 | 9 | light breeze |
| 20 | 9 | light breeze |
| 21 | 9 | light breeze |
| 22 | 9 | light breeze |
| 23 | 9 | light breeze |
| 24 | 9 | light breeze |
| 25 | 9 | light breeze |
| 26 | 9 | light breeze |
| 27 | 9 | light breeze |
| 28 | 9 | light breeze |
| 29 | 9 | light breeze |
| 30 | 9 | light breeze |
| 31 | 9 | light breeze |
Sunrise & sunset in May
Daylight runs from about 14 h 06 min at the start of May to 15 h 12 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 66 minutes over May. Sunrise moves from 5:34 AM to 4:59 AM, and sunset from 7:37 PM to 8:13 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 14.1 | 14.1 | 14.2 | 14.2 | 14.2 | 14.3 | 14.3 | 14.4 | 14.4 | 14.5 | 14.5 | 14.6 | 14.6 | 14.6 | 14.7 | 14.7 | 14.8 | 14.8 | 14.8 | 14.9 | 14.9 | 14.9 | 15.0 | 15.0 | 15.1 | 15.1 | 15.1 | 15.1 | 15.2 | 15.2 | 15.2 |
| Sunrise (AM) | 5:34 | 5:32 | 5:31 | 5:29 | 5:28 | 5:26 | 5:25 | 5:23 | 5:22 | 5:21 | 5:19 | 5:18 | 5:17 | 5:15 | 5:14 | 5:13 | 5:12 | 5:11 | 5:10 | 5:09 | 5:07 | 5:06 | 5:06 | 5:05 | 5:04 | 5:03 | 5:02 | 5:01 | 5:00 | 5:00 | 4:59 |
| Sunset (PM) | 7:37 | 7:39 | 7:40 | 7:41 | 7:43 | 7:44 | 7:45 | 7:47 | 7:48 | 7:49 | 7:50 | 7:52 | 7:53 | 7:54 | 7:55 | 7:56 | 7:58 | 7:59 | 8:00 | 8:01 | 8:02 | 8:03 | 8:05 | 8:06 | 8:07 | 8:08 | 8:09 | 8:10 | 8:11 | 8:12 | 8:13 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 14.1 | 5:34 | 7:37 |
| 2 | 14.1 | 5:32 | 7:39 |
| 3 | 14.2 | 5:31 | 7:40 |
| 4 | 14.2 | 5:29 | 7:41 |
| 5 | 14.2 | 5:28 | 7:43 |
| 6 | 14.3 | 5:26 | 7:44 |
| 7 | 14.3 | 5:25 | 7:45 |
| 8 | 14.4 | 5:23 | 7:47 |
| 9 | 14.4 | 5:22 | 7:48 |
| 10 | 14.5 | 5:21 | 7:49 |
| 11 | 14.5 | 5:19 | 7:50 |
| 12 | 14.6 | 5:18 | 7:52 |
| 13 | 14.6 | 5:17 | 7:53 |
| 14 | 14.6 | 5:15 | 7:54 |
| 15 | 14.7 | 5:14 | 7:55 |
| 16 | 14.7 | 5:13 | 7:56 |
| 17 | 14.8 | 5:12 | 7:58 |
| 18 | 14.8 | 5:11 | 7:59 |
| 19 | 14.8 | 5:10 | 8:00 |
| 20 | 14.9 | 5:09 | 8:01 |
| 21 | 14.9 | 5:07 | 8:02 |
| 22 | 14.9 | 5:06 | 8:03 |
| 23 | 15.0 | 5:06 | 8:05 |
| 24 | 15.0 | 5:05 | 8:06 |
| 25 | 15.1 | 5:04 | 8:07 |
| 26 | 15.1 | 5:03 | 8:08 |
| 27 | 15.1 | 5:02 | 8:09 |
| 28 | 15.1 | 5:01 | 8:10 |
| 29 | 15.2 | 5:00 | 8:11 |
| 30 | 15.2 | 5:00 | 8:12 |
| 31 | 15.2 | 4:59 | 8:13 |
Solar energy in May
Average shortwave solar energy reaching the ground each day in May, about 6.08 kWh/m².
For context, solar energy here swings from a low near 1.15 kWh/m² to a high of 6.61 kWh/m² in June across the year — May's 6.08 kWh/m² sits near the top of that range.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 5.8 | 5.8 | 5.8 | 5.8 | 5.9 | 5.9 | 5.9 | 5.9 | 5.9 | 5.9 | 6.0 | 6.0 | 6.0 | 6.0 | 6.0 | 6.0 | 6.1 | 6.1 | 6.1 | 6.1 | 6.2 | 6.2 | 6.2 | 6.3 | 6.3 | 6.3 | 6.3 | 6.3 | 6.4 | 6.4 | 6.4 |
| Level | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 5.8 | Bright |
| 2 | 5.8 | Bright |
| 3 | 5.8 | Bright |
| 4 | 5.8 | Bright |
| 5 | 5.9 | Bright |
| 6 | 5.9 | Bright |
| 7 | 5.9 | Bright |
| 8 | 5.9 | Bright |
| 9 | 5.9 | Bright |
| 10 | 5.9 | Bright |
| 11 | 6.0 | Bright |
| 12 | 6.0 | Bright |
| 13 | 6.0 | Bright |
| 14 | 6.0 | Intense |
| 15 | 6.0 | Intense |
| 16 | 6.0 | Intense |
| 17 | 6.1 | Intense |
| 18 | 6.1 | Intense |
| 19 | 6.1 | Intense |
| 20 | 6.1 | Intense |
| 21 | 6.2 | Intense |
| 22 | 6.2 | Intense |
| 23 | 6.2 | Intense |
| 24 | 6.3 | Intense |
| 25 | 6.3 | Intense |
| 26 | 6.3 | Intense |
| 27 | 6.3 | Intense |
| 28 | 6.3 | Intense |
| 29 | 6.4 | Intense |
| 30 | 6.4 | Intense |
| 31 | 6.4 | Intense |
Is May a good time to visit Mackinac Island?
Our two travel scores rate May for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
May is a weaker month for outdoor sightseeing in Mackinac Island.
What to pack for Mackinac Island in May
From May's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In May, Mackinac Island sees daytime highs around 56°F and nights near 43°F. Pack sun protection. Worth having: a warm layer and rain gear. About 10 days see rain.
Sea temperature near Mackinac Island in May
The nearest coast averages about 41°F in May — 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 66°F and coldest in February near 34°F.
The water stays below 68°F all year — cool enough that most swimmers want a wetsuit.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°F) | 35 | 34 | 34 | 36 | 41 | 52 | 62 | 66 | 61 | 53 | 44 | 38 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Cool | Cool | Cool | Bracing | Bracing | Bracing |
| Sea temperature (°F) | Comfort | |
|---|---|---|
| Jan | 35 | Bracing |
| Feb | 34 | Bracing |
| Mar | 34 | Bracing |
| Apr | 36 | Bracing |
| May | 41 | Bracing |
| Jun | 52 | Bracing |
| Jul | 62 | Cool |
| Aug | 66 | Cool |
| Sep | 61 | Cool |
| Oct | 53 | Bracing |
| Nov | 44 | Bracing |
| Dec | 38 | Bracing |
UV index in Mackinac Island in May
Clear-sky midday UV in May 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 Mackinac Island peaks around June 19 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 1 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 7 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 1 | 2 | 3 | 5 | 7 | 8 | 8 | 7 | 5 | 3 | 2 | 1 |
| Level | Low | Low | Moderate | Moderate | High | Very high | Very high | High | Moderate | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 2 | Low |
| Mar | 3 | Moderate |
| Apr | 5 | Moderate |
| May | 7 | High |
| Jun | 8 | Very high |
| Jul | 8 | Very high |
| Aug | 7 | High |
| Sep | 5 | Moderate |
| Oct | 3 | Moderate |
| Nov | 2 | Low |
| Dec | 1 | Low |
Where is Mackinac Island?
Mackinac Island sits at 45.8°N, 84.6°W, 0 ft above sea level, in United States. The nearest listed city is Sault Ste. Marie, 47 mi away.
Topography around Mackinac Island
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Mackinac Island.
Within 2 miles, the terrain around Mackinac Island has only modest variations in elevation — a maximum elevation change of 351 ft around an average of 614 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 351 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,037 ft.
The land around Mackinac Island is covered by water (72%) and trees (24%) within 2 miles, water (75%) and trees (22%) within 10 miles, and trees (48%) and water (44%) within 50 miles.
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
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 Mackinac Island (45.8492°, -84.6189°, elevation 0 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. 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).