Chatham weather in July
In July, Chatham sees average daytime highs of 27°C and overnight lows near 18°C, with 86 mm of rain across 11.1 wet days and about 14.8 hours of daylight. It is the 1st-warmest and 4th-wettest month of the year here.
Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 37% of the time in July, and the air most often feels muggy.
Daylight stretches from about 15 h 06 min at the start of July to 14 h 24 min by month's end. Set against the rest of the year, July is Chatham's 1st-clearest and 11th-windiest month. For the whole year in context, see Chatham's year-round climate.
- Daytime high
- 27°
- 1st warmest
- Overnight low
- 18°
- 12th coldest
- Rainfall
- 86 mm
- 11.1 wet days
- Daylight
- 14 h 48 min
- 5:10 AM – 7:59 PM
- Cloud cover
- 53%
- 1st clearest
- Wind
- 12 km/h
- 11th windiest
- Solar energy
- 6.38 kWh/m²
- Travel score
- 6.5
- out of 10
Chatham is community in Ontario, Canada.
- Air quality
- Good
- PM2.5 7 µg/m³ · 2019
- Founded
- 1998
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in July
Day-to-day highs hold fairly steady near 27°C through the month.
A typical July day in Chatham reaches about 27°C in the afternoon and slips back to 18°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 31°C. Set against its neighbours, July runs about 2°C warmer than June and about 1°C warmer than August.
| 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 (°C) | 26 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 |
| Avg low (°C) | 17 | 17 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 26 | 17 |
| 2 | 27 | 17 |
| 3 | 27 | 18 |
| 4 | 27 | 18 |
| 5 | 27 | 18 |
| 6 | 27 | 18 |
| 7 | 27 | 18 |
| 8 | 27 | 18 |
| 9 | 27 | 18 |
| 10 | 27 | 18 |
| 11 | 27 | 18 |
| 12 | 27 | 18 |
| 13 | 27 | 18 |
| 14 | 27 | 18 |
| 15 | 27 | 18 |
| 16 | 27 | 18 |
| 17 | 27 | 18 |
| 18 | 27 | 18 |
| 19 | 27 | 18 |
| 20 | 27 | 18 |
| 21 | 27 | 18 |
| 22 | 27 | 18 |
| 23 | 27 | 18 |
| 24 | 27 | 18 |
| 25 | 27 | 18 |
| 26 | 27 | 18 |
| 27 | 27 | 18 |
| 28 | 27 | 18 |
| 29 | 27 | 18 |
| 30 | 27 | 18 |
| 31 | 27 | 18 |
How July really feels in Chatham
Once humidity and wind are folded in, July averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.
July sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Chatham weather by month
How July compares with the rest of the year at a glance. July is the 1st-warmest and 4th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | -1° / -7° | 66 | 10.5 | 6.6 | 9.3 | 0.0 |
| Feb | 0° / -7° | 54 | 8.5 | 6 | 10.3 | 0.0 |
| Mar | 6° / -3° | 66 | 10.2 | 4.4 | 11.6 | 0.5 |
| Apr | 13° / 4° | 89 | 12.2 | 1.3 | 13.1 | 3.3 |
| May | 19° / 10° | 92 | 12.3 | 0 | 14.4 | 5.7 |
| Jun | 25° / 15° | 94 | 11.2 | 0 | 15 | 6.6 |
| Jul | 27° / 18° | 86 | 11.1 | 0 | 14.8 | 6.5 |
| Aug | 26° / 17° | 77 | 10.4 | 0 | 13.7 | 6.8 |
| Sep | 22° / 13° | 73 | 8.7 | 0 | 12.3 | 6.9 |
| Oct | 15° / 7° | 76 | 10.3 | 0 | 10.8 | 4.6 |
| Nov | 8° / 2° | 71 | 9.7 | 1.9 | 9.6 | 1.4 |
| Dec | 2° / -3° | 63 | 10.1 | 5 | 9 | 0.0 |
Cloud cover in July
The sky is clear or mostly clear about 37% of the time in July, the clearest month of the year.
Beyond those clear spells, partly cloudy skies cover about 21% of July, with mostly cloudy or overcast conditions the remaining 42%.
| 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 (%) | 59 | 60 | 60 | 60 | 61 | 60 | 60 | 60 | 60 | 59 | 59 | 58 | 57 | 57 | 56 | 56 | 55 | 55 | 55 | 55 | 55 | 55 | 56 | 56 | 56 | 57 | 57 | 57 | 57 | 58 | 58 |
| Cloudier (%) | 41 | 40 | 40 | 40 | 39 | 40 | 40 | 40 | 40 | 41 | 41 | 42 | 43 | 43 | 44 | 44 | 45 | 45 | 45 | 45 | 45 | 45 | 44 | 44 | 44 | 43 | 43 | 43 | 43 | 42 | 42 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 59 | 41 |
| 2 | 60 | 40 |
| 3 | 60 | 40 |
| 4 | 60 | 40 |
| 5 | 61 | 39 |
| 6 | 60 | 40 |
| 7 | 60 | 40 |
| 8 | 60 | 40 |
| 9 | 60 | 40 |
| 10 | 59 | 41 |
| 11 | 59 | 41 |
| 12 | 58 | 42 |
| 13 | 57 | 43 |
| 14 | 57 | 43 |
| 15 | 56 | 44 |
| 16 | 56 | 44 |
| 17 | 55 | 45 |
| 18 | 55 | 45 |
| 19 | 55 | 45 |
| 20 | 55 | 45 |
| 21 | 55 | 45 |
| 22 | 55 | 45 |
| 23 | 56 | 44 |
| 24 | 56 | 44 |
| 25 | 56 | 44 |
| 26 | 57 | 43 |
| 27 | 57 | 43 |
| 28 | 57 | 43 |
| 29 | 57 | 43 |
| 30 | 58 | 42 |
| 31 | 58 | 42 |
Chance of precipitation in July
Chatham gets around 86 mm of rain over 11.1 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 36% and peaks near 39% on the wettest days.
| 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 (%) | 36 | 35 | 35 | 34 | 34 | 33 | 33 | 33 | 33 | 33 | 34 | 34 | 34 | 35 | 35 | 36 | 36 | 37 | 37 | 38 | 38 | 38 | 39 | 39 | 38 | 38 | 38 | 38 | 37 | 37 | 37 |
| Rain chance (%) | |
|---|---|
| 1 | 36 |
| 2 | 35 |
| 3 | 35 |
| 4 | 34 |
| 5 | 34 |
| 6 | 33 |
| 7 | 33 |
| 8 | 33 |
| 9 | 33 |
| 10 | 33 |
| 11 | 34 |
| 12 | 34 |
| 13 | 34 |
| 14 | 35 |
| 15 | 35 |
| 16 | 36 |
| 17 | 36 |
| 18 | 37 |
| 19 | 37 |
| 20 | 38 |
| 21 | 38 |
| 22 | 38 |
| 23 | 39 |
| 24 | 39 |
| 25 | 38 |
| 26 | 38 |
| 27 | 38 |
| 28 | 38 |
| 29 | 37 |
| 30 | 37 |
| 31 | 37 |
Humidity in July
Most of July feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, July lands in the muggy band about 26% of days. Sticky, muggy-or-worse air turns up on roughly 37% of them.
| 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 (%) | 21 | 21 | 20 | 20 | 20 | 20 | 19 | 19 | 19 | 18 | 18 | 17 | 17 | 17 | 16 | 16 | 16 | 15 | 15 | 15 | 14 | 14 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 12 |
| Comfortable (%) | 26 | 26 | 26 | 26 | 26 | 25 | 25 | 24 | 23 | 22 | 21 | 21 | 20 | 19 | 18 | 18 | 18 | 17 | 17 | 17 | 17 | 18 | 18 | 19 | 19 | 20 | 21 | 22 | 22 | 23 | 23 |
| Humid (%) | 19 | 20 | 20 | 20 | 21 | 22 | 22 | 23 | 24 | 24 | 25 | 25 | 26 | 26 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 29 | 29 | 29 | 28 | 28 |
| Muggy (%) | 26 | 26 | 25 | 25 | 24 | 24 | 24 | 24 | 24 | 24 | 25 | 25 | 26 | 26 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 26 | 26 | 26 | 26 |
| Oppressive (%) | 7 | 8 | 8 | 9 | 9 | 9 | 10 | 10 | 10 | 10 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 10 | 10 | 10 |
| Miserable (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|---|---|---|
| 1 | 21 | 26 | 19 | 26 | 7 | 0 |
| 2 | 21 | 26 | 20 | 26 | 8 | 0 |
| 3 | 20 | 26 | 20 | 25 | 8 | 0 |
| 4 | 20 | 26 | 20 | 25 | 9 | 0 |
| 5 | 20 | 26 | 21 | 24 | 9 | 0 |
| 6 | 20 | 25 | 22 | 24 | 9 | 0 |
| 7 | 19 | 25 | 22 | 24 | 10 | 0 |
| 8 | 19 | 24 | 23 | 24 | 10 | 0 |
| 9 | 19 | 23 | 24 | 24 | 10 | 0 |
| 10 | 18 | 22 | 24 | 24 | 10 | 0 |
| 11 | 18 | 21 | 25 | 25 | 11 | 0 |
| 12 | 17 | 21 | 25 | 25 | 11 | 0 |
| 13 | 17 | 20 | 26 | 26 | 11 | 0 |
| 14 | 17 | 19 | 26 | 26 | 11 | 1 |
| 15 | 16 | 18 | 27 | 27 | 11 | 1 |
| 16 | 16 | 18 | 27 | 27 | 11 | 1 |
| 17 | 16 | 18 | 27 | 27 | 11 | 1 |
| 18 | 15 | 17 | 28 | 27 | 12 | 1 |
| 19 | 15 | 17 | 28 | 28 | 12 | 1 |
| 20 | 15 | 17 | 28 | 28 | 12 | 1 |
| 21 | 14 | 17 | 28 | 28 | 12 | 1 |
| 22 | 14 | 18 | 28 | 28 | 12 | 1 |
| 23 | 13 | 18 | 28 | 28 | 12 | 1 |
| 24 | 13 | 19 | 29 | 27 | 12 | 1 |
| 25 | 13 | 19 | 29 | 27 | 11 | 1 |
| 26 | 12 | 20 | 29 | 27 | 11 | 1 |
| 27 | 12 | 21 | 29 | 27 | 11 | 1 |
| 28 | 12 | 22 | 29 | 26 | 11 | 1 |
| 29 | 12 | 22 | 29 | 26 | 10 | 1 |
| 30 | 12 | 23 | 28 | 26 | 10 | 1 |
| 31 | 12 | 23 | 28 | 26 | 10 | 1 |
Wind in July
Winds average 12 km/h in July.
Across July, daily wind ranges from about 11 km/h on the calmest days to 12 km/h 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 (km/h) | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 |
| Feels | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | 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 (km/h) | Feels | |
|---|---|---|
| 1 | 12 | light breeze |
| 2 | 12 | light breeze |
| 3 | 12 | light breeze |
| 4 | 12 | light breeze |
| 5 | 12 | light breeze |
| 6 | 12 | light breeze |
| 7 | 12 | light breeze |
| 8 | 12 | calm |
| 9 | 12 | calm |
| 10 | 12 | calm |
| 11 | 12 | calm |
| 12 | 12 | calm |
| 13 | 12 | calm |
| 14 | 12 | calm |
| 15 | 12 | calm |
| 16 | 12 | calm |
| 17 | 12 | calm |
| 18 | 12 | calm |
| 19 | 12 | calm |
| 20 | 12 | calm |
| 21 | 12 | calm |
| 22 | 12 | calm |
| 23 | 12 | calm |
| 24 | 12 | calm |
| 25 | 12 | calm |
| 26 | 12 | calm |
| 27 | 12 | calm |
| 28 | 11 | calm |
| 29 | 11 | calm |
| 30 | 11 | calm |
| 31 | 11 | calm |
Sunrise & sunset in July
Daylight runs from about 15 h 06 min at the start of July to 14 h 24 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 42 minutes over July. Sunrise moves from 5:00 AM to 5:24 AM, and sunset from 8:04 PM to 7:46 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) | 15.1 | 15.1 | 15.1 | 15.0 | 15.0 | 15.0 | 15.0 | 15.0 | 15.0 | 14.9 | 14.9 | 14.9 | 14.9 | 14.9 | 14.8 | 14.8 | 14.8 | 14.8 | 14.7 | 14.7 | 14.7 | 14.7 | 14.6 | 14.6 | 14.6 | 14.5 | 14.5 | 14.5 | 14.4 | 14.4 | 14.4 |
| Sunrise (AM) | 5:00 | 5:00 | 5:01 | 5:01 | 5:02 | 5:03 | 5:03 | 5:04 | 5:05 | 5:05 | 5:06 | 5:07 | 5:07 | 5:08 | 5:09 | 5:10 | 5:11 | 5:11 | 5:12 | 5:13 | 5:14 | 5:15 | 5:16 | 5:17 | 5:18 | 5:19 | 5:20 | 5:21 | 5:22 | 5:23 | 5:24 |
| Sunset (PM) | 8:04 | 8:04 | 8:04 | 8:04 | 8:04 | 8:03 | 8:03 | 8:03 | 8:02 | 8:02 | 8:02 | 8:01 | 8:01 | 8:00 | 8:00 | 7:59 | 7:58 | 7:58 | 7:57 | 7:56 | 7:55 | 7:55 | 7:54 | 7:53 | 7:52 | 7:51 | 7:50 | 7:49 | 7:48 | 7:47 | 7:46 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 15.1 | 5:00 | 8:04 |
| 2 | 15.1 | 5:00 | 8:04 |
| 3 | 15.1 | 5:01 | 8:04 |
| 4 | 15.0 | 5:01 | 8:04 |
| 5 | 15.0 | 5:02 | 8:04 |
| 6 | 15.0 | 5:03 | 8:03 |
| 7 | 15.0 | 5:03 | 8:03 |
| 8 | 15.0 | 5:04 | 8:03 |
| 9 | 15.0 | 5:05 | 8:02 |
| 10 | 14.9 | 5:05 | 8:02 |
| 11 | 14.9 | 5:06 | 8:02 |
| 12 | 14.9 | 5:07 | 8:01 |
| 13 | 14.9 | 5:07 | 8:01 |
| 14 | 14.9 | 5:08 | 8:00 |
| 15 | 14.8 | 5:09 | 8:00 |
| 16 | 14.8 | 5:10 | 7:59 |
| 17 | 14.8 | 5:11 | 7:58 |
| 18 | 14.8 | 5:11 | 7:58 |
| 19 | 14.7 | 5:12 | 7:57 |
| 20 | 14.7 | 5:13 | 7:56 |
| 21 | 14.7 | 5:14 | 7:55 |
| 22 | 14.7 | 5:15 | 7:55 |
| 23 | 14.6 | 5:16 | 7:54 |
| 24 | 14.6 | 5:17 | 7:53 |
| 25 | 14.6 | 5:18 | 7:52 |
| 26 | 14.5 | 5:19 | 7:51 |
| 27 | 14.5 | 5:20 | 7:50 |
| 28 | 14.5 | 5:21 | 7:49 |
| 29 | 14.4 | 5:22 | 7:48 |
| 30 | 14.4 | 5:23 | 7:47 |
| 31 | 14.4 | 5:24 | 7:46 |
Solar energy in July
Average shortwave solar energy reaching the ground each day in July, about 6.38 kWh/m².
For context, solar energy here swings from a low near 1.45 kWh/m² to a high of 6.53 kWh/m² in June across the year — July's 6.38 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) | 6.6 | 6.6 | 6.6 | 6.6 | 6.6 | 6.6 | 6.6 | 6.6 | 6.6 | 6.5 | 6.5 | 6.5 | 6.5 | 6.4 | 6.4 | 6.4 | 6.4 | 6.3 | 6.3 | 6.3 | 6.2 | 6.2 | 6.2 | 6.2 | 6.1 | 6.1 | 6.1 | 6.1 | 6.0 | 6.0 | 6.0 |
| Level | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 6.6 | Intense |
| 2 | 6.6 | Intense |
| 3 | 6.6 | Intense |
| 4 | 6.6 | Intense |
| 5 | 6.6 | Intense |
| 6 | 6.6 | Intense |
| 7 | 6.6 | Intense |
| 8 | 6.6 | Intense |
| 9 | 6.6 | Intense |
| 10 | 6.5 | Intense |
| 11 | 6.5 | Intense |
| 12 | 6.5 | Intense |
| 13 | 6.5 | Intense |
| 14 | 6.4 | Intense |
| 15 | 6.4 | Intense |
| 16 | 6.4 | Intense |
| 17 | 6.4 | Intense |
| 18 | 6.3 | Intense |
| 19 | 6.3 | Intense |
| 20 | 6.3 | Intense |
| 21 | 6.2 | Intense |
| 22 | 6.2 | Intense |
| 23 | 6.2 | Intense |
| 24 | 6.2 | Intense |
| 25 | 6.1 | Intense |
| 26 | 6.1 | Intense |
| 27 | 6.1 | Intense |
| 28 | 6.1 | Intense |
| 29 | 6.0 | Intense |
| 30 | 6.0 | Intense |
| 31 | 6.0 | Intense |
Is July a good time to visit Chatham?
Our two travel scores rate July for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
July is a reasonable time to visit Chatham for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Chatham in July
From July's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In July, Chatham sees daytime highs around 27°C and nights near 18°C. Pack sun protection. Worth having: light clothes and rain gear. About 11 days see rain.
Sea temperature near Chatham in July
The nearest coast averages about 23°C in July — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 32 km away) is warmest in August at about 24°C and coldest in February near 1°C.
It's comfortable for a long swim from Jun 29 to Sep 23 — about 2.9 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 2 | 1 | 1 | 5 | 11 | 18 | 23 | 24 | 21 | 16 | 10 | 5 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Cool | Refreshing | Refreshing | Refreshing | Cool | Bracing | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 2 | Bracing |
| Feb | 1 | Bracing |
| Mar | 1 | Bracing |
| Apr | 5 | Bracing |
| May | 11 | Bracing |
| Jun | 18 | Cool |
| Jul | 23 | Refreshing |
| Aug | 24 | Refreshing |
| Sep | 21 | Refreshing |
| Oct | 16 | Cool |
| Nov | 10 | Bracing |
| Dec | 5 | Bracing |
UV index in Chatham in July
Clear-sky midday UV in July peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Chatham peaks around June 21 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 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) | 2 | 2 | 4 | 6 | 7 | 9 | 9 | 7 | 6 | 3 | 2 | 1 |
| Level | Low | Moderate | Moderate | High | High | Very high | Very high | High | High | Moderate | Moderate | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Low |
| Feb | 2 | Moderate |
| Mar | 4 | Moderate |
| Apr | 6 | High |
| May | 7 | High |
| Jun | 9 | Very high |
| Jul | 9 | Very high |
| Aug | 7 | High |
| Sep | 6 | High |
| Oct | 3 | Moderate |
| Nov | 2 | Moderate |
| Dec | 1 | Low |
Where is Chatham?
Chatham sits at 42.4°N, 82.2°W, 183 m above sea level, in Canada. The nearest listed city is Leamington, 53 km away.
Topography around Chatham
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Chatham.
Within 3 km, the terrain around Chatham has only modest variations in elevation — a maximum elevation change of 27 m around an average of 182 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 62 m; within 80 km, only modest variations in elevation — a maximum elevation change of 159 m.
The land around Chatham is covered by artificial surfaces (34%), trees (26%) and cropland (25%) within 3 km, cropland (88%) within 16 km, and water (44%) and cropland (36%) within 80 km.
Canada travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type A / B
- 120 V · 60 Hz
- Prices
- ≈ 83% of US
- price level, 2025
- GDP per capita
- $55,698
- 2025
- Happiness
- 6.7 / 10
- World Happiness, 2025
- Safe drinking water
- 97%
- of population, 2024
- Homicide rate
- 2
- per 100k, 2023
- Road deaths
- 5.3
- 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 Chatham (42.4122°, -82.1849°, elevation 183 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. 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).