Rochester weather in May
In May, Rochester sees average daytime highs of 65°F and overnight lows near 47°F, with 3.1 in of precipitation across 10.7 wet days and about 14.5 hours of daylight. It is the 5th-warmest and 12th-wettest month of the year here.
Highs climb over the month, from about 60°F in the first days to 69°F by the end. The sky is clear or mostly clear about 23% of the time in May, and the air most often feels dry.
Daylight stretches from about 13 h 54 min at the start of May to 14 h 54 min by month's end. Set against the rest of the year, May is Rochester's 12th-clearest and 8th-windiest month. For the whole year in context, see Rochester's year-round climate.
- Daytime high
- 65°
- 5th warmest
- Overnight low
- 47°
- 8th coldest
- Precipitation
- 3.1 in
- 10.7 wet days
- Daylight
- 14 h 30 min
- 4:26 AM – 6:55 PM
- Cloud cover
- 66%
- 12th clearest
- Wind
- 7 mph
- 8th windiest
- Solar energy
- 5.52 kWh/m²
- Travel score
- 5.6
- out of 10
Rochester is city in Strafford County, New Hampshire, United States.
- Density
- 253/km²
- people per km²
- Founded
- 1749
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in May
Highs climb over the month, from about 60°F in the first days to 69°F by the end.
A typical May day in Rochester reaches about 65°F in the afternoon and slips back to 47°F overnight — a 17°F spread between the day's warmth and the night's chill. On most days the high lands between 53°F and 77°F. Set against its neighbours, May runs about 10°F warmer than April and about 10°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) | 60 | 60 | 60 | 61 | 61 | 61 | 62 | 62 | 62 | 63 | 63 | 63 | 64 | 64 | 64 | 64 | 65 | 65 | 65 | 66 | 66 | 67 | 67 | 67 | 68 | 68 | 68 | 69 | 69 | 69 | 70 |
| Avg low (°F) | 43 | 43 | 44 | 44 | 44 | 44 | 45 | 45 | 45 | 45 | 46 | 46 | 46 | 46 | 47 | 47 | 47 | 48 | 48 | 48 | 49 | 49 | 49 | 50 | 50 | 50 | 51 | 51 | 51 | 52 | 52 |
| Avg high (°F) | Avg low (°F) | |
|---|---|---|
| 1 | 60 | 43 |
| 2 | 60 | 43 |
| 3 | 60 | 44 |
| 4 | 61 | 44 |
| 5 | 61 | 44 |
| 6 | 61 | 44 |
| 7 | 62 | 45 |
| 8 | 62 | 45 |
| 9 | 62 | 45 |
| 10 | 63 | 45 |
| 11 | 63 | 46 |
| 12 | 63 | 46 |
| 13 | 64 | 46 |
| 14 | 64 | 46 |
| 15 | 64 | 47 |
| 16 | 64 | 47 |
| 17 | 65 | 47 |
| 18 | 65 | 48 |
| 19 | 65 | 48 |
| 20 | 66 | 48 |
| 21 | 66 | 49 |
| 22 | 67 | 49 |
| 23 | 67 | 49 |
| 24 | 67 | 50 |
| 25 | 68 | 50 |
| 26 | 68 | 50 |
| 27 | 68 | 51 |
| 28 | 69 | 51 |
| 29 | 69 | 51 |
| 30 | 69 | 52 |
| 31 | 70 | 52 |
How May really feels in Rochester
Once humidity and wind are folded in, May 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.
May sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Rochester weather by month
How May compares with the rest of the year at a glance. May is the 5th-warmest and 12th-wettest month here — the current month is highlighted below.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 31° / 17° | 3.3 | 9.5 | 6.9 | 9.2 | 0.0 |
| Feb | 34° / 18° | 3.2 | 9 | 6.8 | 10.2 | 0.0 |
| Mar | 42° / 26° | 4.2 | 10.8 | 5.8 | 11.6 | 0.4 |
| Apr | 54° / 38° | 4.1 | 10.9 | 1.9 | 13.2 | 3.2 |
| May | 65° / 47° | 3.1 | 10.7 | 0.1 | 14.5 | 5.6 |
| Jun | 74° / 57° | 3.8 | 11.8 | 0 | 15.1 | 6.4 |
| Jul | 80° / 63° | 3.5 | 11.1 | 0 | 14.9 | 6.4 |
| Aug | 78° / 61° | 3.4 | 9.5 | 0 | 13.8 | 6.8 |
| Sep | 71° / 54° | 3.4 | 8.6 | 0 | 12.3 | 6.8 |
| Oct | 59° / 43° | 4.2 | 9.5 | 0.3 | 10.8 | 4.7 |
| Nov | 47° / 33° | 3.6 | 9.2 | 1.5 | 9.5 | 1.6 |
| Dec | 37° / 24° | 4.3 | 10.2 | 5.6 | 8.8 | 0.0 |
Cloud cover in May
The sky is clear or mostly clear about 23% of the time in May, the cloudiest month of the year.
Beyond those clear spells, partly cloudy skies cover about 15% of May, with mostly cloudy or overcast conditions the remaining 62%.
| 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 (%) | 40 | 39 | 39 | 39 | 39 | 38 | 37 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 37 | 37 | 38 | 38 | 38 | 39 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 |
| Cloudier (%) | 60 | 61 | 61 | 61 | 61 | 62 | 63 | 64 | 64 | 64 | 64 | 64 | 64 | 64 | 64 | 64 | 64 | 63 | 63 | 62 | 62 | 62 | 61 | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 60 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 40 | 60 |
| 2 | 39 | 61 |
| 3 | 39 | 61 |
| 4 | 39 | 61 |
| 5 | 39 | 61 |
| 6 | 38 | 62 |
| 7 | 37 | 63 |
| 8 | 36 | 64 |
| 9 | 36 | 64 |
| 10 | 36 | 64 |
| 11 | 36 | 64 |
| 12 | 36 | 64 |
| 13 | 36 | 64 |
| 14 | 36 | 64 |
| 15 | 36 | 64 |
| 16 | 36 | 64 |
| 17 | 36 | 64 |
| 18 | 37 | 63 |
| 19 | 37 | 63 |
| 20 | 38 | 62 |
| 21 | 38 | 62 |
| 22 | 38 | 62 |
| 23 | 39 | 61 |
| 24 | 40 | 60 |
| 25 | 40 | 60 |
| 26 | 40 | 60 |
| 27 | 40 | 60 |
| 28 | 40 | 60 |
| 29 | 40 | 60 |
| 30 | 40 | 60 |
| 31 | 40 | 60 |
Chance of precipitation in May
Rochester gets around 3.1 in of rain and snow over 10.7 wet days in May, the driest month. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable precipitation averages around 35% and peaks near 37% 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 (%) | 37 | 36 | 36 | 36 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 35 | 35 | 35 | 35 | 35 | 35 | 36 | 36 |
| Snow chance (%) | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Rain chance (%) | Snow chance (%) | |
|---|---|---|
| 1 | 37 | 2 |
| 2 | 36 | 2 |
| 3 | 36 | 2 |
| 4 | 36 | 1 |
| 5 | 35 | 1 |
| 6 | 35 | 1 |
| 7 | 35 | 1 |
| 8 | 35 | 0 |
| 9 | 35 | 0 |
| 10 | 35 | 0 |
| 11 | 35 | 0 |
| 12 | 35 | 0 |
| 13 | 34 | 0 |
| 14 | 34 | 0 |
| 15 | 34 | 0 |
| 16 | 34 | 0 |
| 17 | 34 | 0 |
| 18 | 34 | 0 |
| 19 | 34 | 0 |
| 20 | 34 | 0 |
| 21 | 34 | 0 |
| 22 | 34 | 0 |
| 23 | 34 | 0 |
| 24 | 35 | 0 |
| 25 | 35 | 0 |
| 26 | 35 | 0 |
| 27 | 35 | 0 |
| 28 | 35 | 0 |
| 29 | 35 | 0 |
| 30 | 36 | 0 |
| 31 | 36 | 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 88% 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 (%) | 96 | 96 | 96 | 95 | 95 | 95 | 95 | 95 | 94 | 94 | 94 | 94 | 92 | 92 | 92 | 91 | 91 | 89 | 88 | 87 | 86 | 84 | 83 | 81 | 80 | 78 | 77 | 76 | 75 | 75 | 72 |
| Comfortable (%) | 3 | 3 | 3 | 4 | 4 | 4 | 4 | 4 | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 7 | 7 | 8 | 9 | 9 | 10 | 11 | 12 | 12 | 13 | 14 | 14 | 15 | 15 | 15 | 16 |
| Humid (%) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 4 | 4 | 5 | 5 | 6 | 6 | 7 | 8 | 8 | 9 | 9 | 10 |
| Muggy (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | |
|---|---|---|---|---|
| 1 | 96 | 3 | 1 | 0 |
| 2 | 96 | 3 | 1 | 0 |
| 3 | 96 | 3 | 1 | 0 |
| 4 | 95 | 4 | 1 | 0 |
| 5 | 95 | 4 | 1 | 0 |
| 6 | 95 | 4 | 1 | 0 |
| 7 | 95 | 4 | 1 | 0 |
| 8 | 95 | 4 | 1 | 0 |
| 9 | 94 | 5 | 1 | 0 |
| 10 | 94 | 5 | 1 | 0 |
| 11 | 94 | 5 | 1 | 0 |
| 12 | 94 | 5 | 1 | 0 |
| 13 | 92 | 6 | 2 | 0 |
| 14 | 92 | 6 | 2 | 0 |
| 15 | 92 | 6 | 2 | 0 |
| 16 | 91 | 7 | 2 | 0 |
| 17 | 91 | 7 | 2 | 0 |
| 18 | 89 | 8 | 3 | 0 |
| 19 | 88 | 9 | 3 | 0 |
| 20 | 87 | 9 | 4 | 0 |
| 21 | 86 | 10 | 4 | 0 |
| 22 | 84 | 11 | 5 | 0 |
| 23 | 83 | 12 | 5 | 0 |
| 24 | 81 | 12 | 6 | 1 |
| 25 | 80 | 13 | 6 | 1 |
| 26 | 78 | 14 | 7 | 1 |
| 27 | 77 | 14 | 8 | 1 |
| 28 | 76 | 15 | 8 | 1 |
| 29 | 75 | 15 | 9 | 1 |
| 30 | 75 | 15 | 9 | 1 |
| 31 | 72 | 16 | 10 | 2 |
Wind in May
Winds average 7 mph in May.
Across May, daily wind ranges from about 7 mph on the calmest days to 7 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) | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (mph) | Feels | |
|---|---|---|
| 1 | 7 | calm |
| 2 | 7 | calm |
| 3 | 7 | calm |
| 4 | 7 | calm |
| 5 | 7 | calm |
| 6 | 7 | calm |
| 7 | 7 | calm |
| 8 | 7 | calm |
| 9 | 7 | calm |
| 10 | 7 | calm |
| 11 | 7 | calm |
| 12 | 7 | calm |
| 13 | 7 | calm |
| 14 | 7 | calm |
| 15 | 7 | calm |
| 16 | 7 | calm |
| 17 | 7 | calm |
| 18 | 7 | calm |
| 19 | 7 | calm |
| 20 | 7 | calm |
| 21 | 7 | calm |
| 22 | 7 | calm |
| 23 | 7 | calm |
| 24 | 7 | calm |
| 25 | 7 | calm |
| 26 | 7 | calm |
| 27 | 7 | calm |
| 28 | 7 | calm |
| 29 | 7 | calm |
| 30 | 7 | calm |
| 31 | 7 | calm |
Sunrise & sunset in May
Daylight runs from about 13 h 54 min at the start of May to 14 h 54 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 60 minutes over May. Sunrise moves from 4:45 AM to 4:13 AM, and sunset from 6:38 PM to 7:09 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) | 13.9 | 13.9 | 14.0 | 14.0 | 14.1 | 14.1 | 14.1 | 14.2 | 14.2 | 14.3 | 14.3 | 14.3 | 14.4 | 14.4 | 14.4 | 14.5 | 14.5 | 14.6 | 14.6 | 14.6 | 14.7 | 14.7 | 14.7 | 14.7 | 14.8 | 14.8 | 14.8 | 14.9 | 14.9 | 14.9 | 14.9 |
| Sunrise (AM) | 4:45 | 4:43 | 4:42 | 4:40 | 4:39 | 4:38 | 4:36 | 4:35 | 4:34 | 4:33 | 4:31 | 4:30 | 4:29 | 4:28 | 4:27 | 4:26 | 4:25 | 4:24 | 4:23 | 4:22 | 4:21 | 4:20 | 4:19 | 4:18 | 4:17 | 4:16 | 4:16 | 4:15 | 4:14 | 4:14 | 4:13 |
| Sunset (PM) | 6:38 | 6:39 | 6:40 | 6:41 | 6:42 | 6:43 | 6:45 | 6:46 | 6:47 | 6:48 | 6:49 | 6:50 | 6:51 | 6:52 | 6:54 | 6:55 | 6:56 | 6:57 | 6:58 | 6:59 | 7:00 | 7:01 | 7:02 | 7:03 | 7:04 | 7:05 | 7:06 | 7:07 | 7:08 | 7:09 | 7:09 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 13.9 | 4:45 | 6:38 |
| 2 | 13.9 | 4:43 | 6:39 |
| 3 | 14.0 | 4:42 | 6:40 |
| 4 | 14.0 | 4:40 | 6:41 |
| 5 | 14.1 | 4:39 | 6:42 |
| 6 | 14.1 | 4:38 | 6:43 |
| 7 | 14.1 | 4:36 | 6:45 |
| 8 | 14.2 | 4:35 | 6:46 |
| 9 | 14.2 | 4:34 | 6:47 |
| 10 | 14.3 | 4:33 | 6:48 |
| 11 | 14.3 | 4:31 | 6:49 |
| 12 | 14.3 | 4:30 | 6:50 |
| 13 | 14.4 | 4:29 | 6:51 |
| 14 | 14.4 | 4:28 | 6:52 |
| 15 | 14.4 | 4:27 | 6:54 |
| 16 | 14.5 | 4:26 | 6:55 |
| 17 | 14.5 | 4:25 | 6:56 |
| 18 | 14.6 | 4:24 | 6:57 |
| 19 | 14.6 | 4:23 | 6:58 |
| 20 | 14.6 | 4:22 | 6:59 |
| 21 | 14.7 | 4:21 | 7:00 |
| 22 | 14.7 | 4:20 | 7:01 |
| 23 | 14.7 | 4:19 | 7:02 |
| 24 | 14.7 | 4:18 | 7:03 |
| 25 | 14.8 | 4:17 | 7:04 |
| 26 | 14.8 | 4:16 | 7:05 |
| 27 | 14.8 | 4:16 | 7:06 |
| 28 | 14.9 | 4:15 | 7:07 |
| 29 | 14.9 | 4:14 | 7:08 |
| 30 | 14.9 | 4:14 | 7:09 |
| 31 | 14.9 | 4:13 | 7:09 |
Solar energy in May
Average shortwave solar energy reaching the ground each day in May, about 5.52 kWh/m².
For context, solar energy here swings from a low near 1.54 kWh/m² to a high of 5.99 kWh/m² in July across the year — May's 5.52 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) | 5.2 | 5.2 | 5.2 | 5.3 | 5.3 | 5.3 | 5.3 | 5.3 | 5.4 | 5.4 | 5.4 | 5.4 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 | 5.7 | 5.7 | 5.7 | 5.7 | 5.7 | 5.7 | 5.7 | 5.7 | 5.8 |
| Level | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 5.2 | Bright |
| 2 | 5.2 | Bright |
| 3 | 5.2 | Bright |
| 4 | 5.3 | Bright |
| 5 | 5.3 | Bright |
| 6 | 5.3 | Bright |
| 7 | 5.3 | Bright |
| 8 | 5.3 | Bright |
| 9 | 5.4 | Bright |
| 10 | 5.4 | Bright |
| 11 | 5.4 | Bright |
| 12 | 5.4 | Bright |
| 13 | 5.5 | Bright |
| 14 | 5.5 | Bright |
| 15 | 5.5 | Bright |
| 16 | 5.5 | Bright |
| 17 | 5.5 | Bright |
| 18 | 5.6 | Bright |
| 19 | 5.6 | Bright |
| 20 | 5.6 | Bright |
| 21 | 5.6 | Bright |
| 22 | 5.6 | Bright |
| 23 | 5.7 | Bright |
| 24 | 5.7 | Bright |
| 25 | 5.7 | Bright |
| 26 | 5.7 | Bright |
| 27 | 5.7 | Bright |
| 28 | 5.7 | Bright |
| 29 | 5.7 | Bright |
| 30 | 5.7 | Bright |
| 31 | 5.8 | Bright |
Hazard calendar for Rochester
None of Rochester's seasonal hazards are active in May. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.
Rochester sits in the Atlantic hurricane belt; the season peaks August–October.
Is May a good time to visit Rochester?
Our two travel scores rate May for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
May is a reasonable time to visit Rochester for sightseeing.
What to pack for Rochester in May
From May's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In May, Rochester sees daytime highs around 65°F and nights near 47°F. Worth packing: rain gear and sun protection. About 11 days see rain.
Sea temperature near Rochester in May
The nearest coast averages about 49°F in May — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 22 mi away) is warmest in August at about 65°F and coldest in March near 38°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) | 42 | 39 | 38 | 42 | 49 | 57 | 63 | 65 | 62 | 55 | 49 | 45 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Cool | Cool | Cool | Bracing | Bracing | Bracing |
| Sea temperature (°F) | Comfort | |
|---|---|---|
| Jan | 42 | Bracing |
| Feb | 39 | Bracing |
| Mar | 38 | Bracing |
| Apr | 42 | Bracing |
| May | 49 | Bracing |
| Jun | 57 | Bracing |
| Jul | 63 | Cool |
| Aug | 65 | Cool |
| Sep | 62 | Cool |
| Oct | 55 | Bracing |
| Nov | 49 | Bracing |
| Dec | 45 | Bracing |
UV index in Rochester 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 Rochester peaks around July 10 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 8 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 1 | 2 | 4 | 5 | 7 | 7 | 7 | 4 | 6 | 3 | 2 | 1 |
| Level | Low | Moderate | Moderate | High | High | High | Very high | Moderate | High | Moderate | Moderate | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 2 | Moderate |
| Mar | 4 | Moderate |
| Apr | 5 | High |
| May | 7 | High |
| Jun | 7 | High |
| Jul | 7 | Very high |
| Aug | 4 | Moderate |
| Sep | 6 | High |
| Oct | 3 | Moderate |
| Nov | 2 | Moderate |
| Dec | 1 | Low |
Where is Rochester?
Rochester sits at 43.3°N, 71.0°W, 230 ft above sea level, in United States. The nearest listed city is Dover, 8.7 mi away.
Topography around Rochester
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Rochester.
Within 2 miles, the terrain around Rochester has only modest variations in elevation — a maximum elevation change of 318 ft around an average of 292 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,414 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 4,019 ft.
The land around Rochester is covered by trees (71%) within 2 miles, trees (85%) within 10 miles, and trees (72%) and water (22%) 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 Rochester (43.3045°, -70.9756°, elevation 230 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).