Lafayette weather in December
In December, Lafayette sees average daytime highs of 64°F and overnight lows near 46°F, with 4.6 in of precipitation across 9.2 wet days and about 10.1 hours of daylight. It is the 11th-warmest and 4th-wettest month of the year here.
Highs ease over the month, from about 66°F in the first days to 62°F by the end. The sky is clear or mostly clear about 35% of the time in December, and the air most often feels dry.
Daylight stretches from about 10 h 12 min at the start of December to 10 h 06 min by month's end. Set against the rest of the year, December is Lafayette's 8th-clearest and 5th-windiest month. For the whole year in context, see Lafayette's year-round climate.
- Daytime high
- 64°
- 11th warmest
- Overnight low
- 46°
- 2nd coldest
- Precipitation
- 4.6 in
- 9.2 wet days
- Daylight
- 10 h 06 min
- 7:02 AM – 5:06 PM
- Cloud cover
- 57%
- 8th clearest
- Wind
- 8 mph
- 5th windiest
- Solar energy
- 2.67 kWh/m²
- Travel score
- 5.9
- out of 10
Lafayette is city in Lafayette Parish, Louisiana, United States.
- Density
- 950/km²
- people per km²
- Founded
- 1821
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in December
Highs ease over the month, from about 66°F in the first days to 62°F by the end.
A typical December day in Lafayette reaches about 64°F in the afternoon and slips back to 46°F overnight — a 18°F spread between the day's warmth and the night's chill. On most days the high lands between 51°F and 76°F. Set against its neighbours, December runs about 7°F cooler than November and about 2°F warmer than January.
| 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) | 67 | 67 | 66 | 66 | 66 | 66 | 65 | 65 | 65 | 65 | 65 | 64 | 64 | 64 | 64 | 64 | 64 | 63 | 63 | 63 | 63 | 63 | 63 | 62 | 62 | 62 | 62 | 62 | 62 | 62 | 62 |
| Avg low (°F) | 47 | 47 | 47 | 47 | 47 | 46 | 46 | 46 | 46 | 46 | 46 | 46 | 46 | 46 | 45 | 45 | 45 | 45 | 45 | 45 | 45 | 45 | 45 | 45 | 45 | 45 | 45 | 44 | 44 | 44 | 44 |
| Avg high (°F) | Avg low (°F) | |
|---|---|---|
| 1 | 67 | 47 |
| 2 | 67 | 47 |
| 3 | 66 | 47 |
| 4 | 66 | 47 |
| 5 | 66 | 47 |
| 6 | 66 | 46 |
| 7 | 65 | 46 |
| 8 | 65 | 46 |
| 9 | 65 | 46 |
| 10 | 65 | 46 |
| 11 | 65 | 46 |
| 12 | 64 | 46 |
| 13 | 64 | 46 |
| 14 | 64 | 46 |
| 15 | 64 | 45 |
| 16 | 64 | 45 |
| 17 | 64 | 45 |
| 18 | 63 | 45 |
| 19 | 63 | 45 |
| 20 | 63 | 45 |
| 21 | 63 | 45 |
| 22 | 63 | 45 |
| 23 | 63 | 45 |
| 24 | 62 | 45 |
| 25 | 62 | 45 |
| 26 | 62 | 45 |
| 27 | 62 | 45 |
| 28 | 62 | 44 |
| 29 | 62 | 44 |
| 30 | 62 | 44 |
| 31 | 62 | 44 |
How December really feels in Lafayette
Once humidity and wind are folded in, December 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.
December sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Lafayette weather by month
How December compares with the rest of the year at a glance. December is the 11th-warmest and 4th-wettest month here — the current month is highlighted below.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 62° / 44° | 5.0 | 9.5 | 10.3 | 5.4 |
| Feb | 65° / 47° | 4.2 | 8.8 | 10.9 | 6.0 |
| Mar | 72° / 53° | 4.3 | 10.1 | 11.8 | 6.7 |
| Apr | 78° / 59° | 4.3 | 9.1 | 12.7 | 7.0 |
| May | 85° / 67° | 3.6 | 9.7 | 13.5 | 5.5 |
| Jun | 89° / 73° | 4.5 | 14.2 | 13.9 | 3.7 |
| Jul | 90° / 75° | 4.9 | 17.5 | 13.8 | 3.2 |
| Aug | 91° / 74° | 4.8 | 16.1 | 13.1 | 3.2 |
| Sep | 88° / 70° | 3.8 | 11.2 | 12.2 | 4.5 |
| Oct | 80° / 60° | 3.8 | 7.7 | 11.3 | 7.0 |
| Nov | 71° / 51° | 3.5 | 8.2 | 10.5 | 7.1 |
| Dec | 64° / 46° | 4.6 | 9.2 | 10.1 | 5.9 |
Cloud cover in December
The sky is clear or mostly clear about 35% of the time in December.
Beyond those clear spells, partly cloudy skies cover about 13% of December, with mostly cloudy or overcast conditions the remaining 52%.
| 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 (%) | 54 | 53 | 52 | 52 | 51 | 51 | 50 | 50 | 48 | 49 | 49 | 48 | 48 | 48 | 48 | 48 | 48 | 48 | 48 | 48 | 47 | 47 | 45 | 45 | 44 | 44 | 45 | 44 | 44 | 44 | 43 |
| Cloudier (%) | 46 | 47 | 48 | 48 | 49 | 49 | 50 | 50 | 52 | 51 | 51 | 52 | 52 | 52 | 52 | 52 | 52 | 52 | 52 | 52 | 53 | 53 | 55 | 55 | 56 | 56 | 55 | 56 | 56 | 56 | 57 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 54 | 46 |
| 2 | 53 | 47 |
| 3 | 52 | 48 |
| 4 | 52 | 48 |
| 5 | 51 | 49 |
| 6 | 51 | 49 |
| 7 | 50 | 50 |
| 8 | 50 | 50 |
| 9 | 48 | 52 |
| 10 | 49 | 51 |
| 11 | 49 | 51 |
| 12 | 48 | 52 |
| 13 | 48 | 52 |
| 14 | 48 | 52 |
| 15 | 48 | 52 |
| 16 | 48 | 52 |
| 17 | 48 | 52 |
| 18 | 48 | 52 |
| 19 | 48 | 52 |
| 20 | 48 | 52 |
| 21 | 47 | 53 |
| 22 | 47 | 53 |
| 23 | 45 | 55 |
| 24 | 45 | 55 |
| 25 | 44 | 56 |
| 26 | 44 | 56 |
| 27 | 45 | 55 |
| 28 | 44 | 56 |
| 29 | 44 | 56 |
| 30 | 44 | 56 |
| 31 | 43 | 57 |
Chance of precipitation in December
Lafayette gets around 4.6 in of rain and snow over 9.2 wet days in December. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable precipitation averages around 30% and peaks near 32% 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 (%) | 30 | 30 | 30 | 30 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 30 | 30 | 30 | 30 | 31 | 31 | 31 | 31 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 31 |
| Rain chance (%) | |
|---|---|
| 1 | 30 |
| 2 | 30 |
| 3 | 30 |
| 4 | 30 |
| 5 | 29 |
| 6 | 29 |
| 7 | 29 |
| 8 | 29 |
| 9 | 29 |
| 10 | 29 |
| 11 | 29 |
| 12 | 29 |
| 13 | 29 |
| 14 | 29 |
| 15 | 29 |
| 16 | 30 |
| 17 | 30 |
| 18 | 30 |
| 19 | 30 |
| 20 | 31 |
| 21 | 31 |
| 22 | 31 |
| 23 | 31 |
| 24 | 32 |
| 25 | 32 |
| 26 | 32 |
| 27 | 32 |
| 28 | 32 |
| 29 | 32 |
| 30 | 32 |
| 31 | 31 |
Humidity in December
Most of December feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, December lands in the dry band about 72% of days. Sticky, muggy-or-worse air turns up on roughly 8% 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 (%) | 67 | 67 | 68 | 68 | 68 | 69 | 69 | 69 | 69 | 71 | 71 | 71 | 71 | 71 | 72 | 72 | 72 | 73 | 72 | 74 | 74 | 74 | 75 | 75 | 75 | 74 | 74 | 75 | 75 | 75 | 75 |
| Comfortable (%) | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 10 | 10 | 9 | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 |
| Humid (%) | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 11 | 11 | 10 | 10 | 10 | 10 |
| Muggy (%) | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 7 | 7 | 7 | 7 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
| Oppressive (%) | 1 | 1 | 0 | 0 | 0 | 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 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | |
|---|---|---|---|---|---|
| 1 | 67 | 11 | 12 | 9 | 1 |
| 2 | 67 | 11 | 12 | 9 | 1 |
| 3 | 68 | 11 | 12 | 9 | 0 |
| 4 | 68 | 11 | 12 | 9 | 0 |
| 5 | 68 | 11 | 12 | 9 | 0 |
| 6 | 69 | 11 | 11 | 9 | 0 |
| 7 | 69 | 11 | 11 | 9 | 0 |
| 8 | 69 | 11 | 11 | 9 | 0 |
| 9 | 69 | 11 | 11 | 9 | 0 |
| 10 | 71 | 11 | 10 | 8 | 0 |
| 11 | 71 | 11 | 10 | 8 | 0 |
| 12 | 71 | 11 | 10 | 8 | 0 |
| 13 | 71 | 11 | 10 | 8 | 0 |
| 14 | 71 | 11 | 10 | 8 | 0 |
| 15 | 72 | 11 | 10 | 7 | 0 |
| 16 | 72 | 11 | 10 | 7 | 0 |
| 17 | 72 | 11 | 10 | 7 | 0 |
| 18 | 73 | 10 | 10 | 7 | 0 |
| 19 | 72 | 10 | 10 | 7 | 1 |
| 20 | 74 | 9 | 10 | 6 | 1 |
| 21 | 74 | 9 | 10 | 6 | 1 |
| 22 | 74 | 9 | 10 | 6 | 1 |
| 23 | 75 | 8 | 10 | 6 | 1 |
| 24 | 75 | 8 | 10 | 6 | 1 |
| 25 | 75 | 8 | 10 | 6 | 1 |
| 26 | 74 | 8 | 11 | 6 | 1 |
| 27 | 74 | 8 | 11 | 6 | 1 |
| 28 | 75 | 8 | 10 | 6 | 1 |
| 29 | 75 | 8 | 10 | 6 | 1 |
| 30 | 75 | 8 | 10 | 6 | 1 |
| 31 | 75 | 8 | 10 | 6 | 1 |
Wind in December
Winds average 8 mph in December.
Across December, daily wind ranges from about 8 mph on the calmest days to 8 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) | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 |
| 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 | 8 | light breeze |
| 2 | 8 | light breeze |
| 3 | 8 | light breeze |
| 4 | 8 | light breeze |
| 5 | 8 | light breeze |
| 6 | 8 | light breeze |
| 7 | 8 | light breeze |
| 8 | 8 | light breeze |
| 9 | 8 | light breeze |
| 10 | 8 | light breeze |
| 11 | 8 | light breeze |
| 12 | 8 | light breeze |
| 13 | 8 | light breeze |
| 14 | 8 | light breeze |
| 15 | 8 | light breeze |
| 16 | 8 | light breeze |
| 17 | 8 | light breeze |
| 18 | 8 | light breeze |
| 19 | 8 | light breeze |
| 20 | 8 | light breeze |
| 21 | 8 | light breeze |
| 22 | 8 | light breeze |
| 23 | 8 | light breeze |
| 24 | 8 | light breeze |
| 25 | 8 | light breeze |
| 26 | 8 | light breeze |
| 27 | 8 | light breeze |
| 28 | 8 | light breeze |
| 29 | 8 | light breeze |
| 30 | 8 | light breeze |
| 31 | 8 | light breeze |
Sunrise & sunset in December
Daylight runs from about 10 h 12 min at the start of December to 10 h 06 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 6 minutes over December. Sunrise moves from 6:52 AM to 7:09 AM, and sunset from 5:04 PM to 5:14 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) | 10.2 | 10.2 | 10.2 | 10.2 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.0 | 10.0 | 10.0 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 |
| Sunrise (AM) | 6:52 | 6:53 | 6:54 | 6:54 | 6:55 | 6:56 | 6:57 | 6:57 | 6:58 | 6:59 | 6:59 | 7:00 | 7:01 | 7:01 | 7:02 | 7:02 | 7:03 | 7:04 | 7:04 | 7:05 | 7:05 | 7:06 | 7:06 | 7:06 | 7:07 | 7:07 | 7:08 | 7:08 | 7:08 | 7:09 | 7:09 |
| Sunset (PM) | 5:04 | 5:04 | 5:04 | 5:04 | 5:04 | 5:04 | 5:04 | 5:04 | 5:04 | 5:04 | 5:05 | 5:05 | 5:05 | 5:05 | 5:06 | 5:06 | 5:06 | 5:07 | 5:07 | 5:08 | 5:08 | 5:09 | 5:09 | 5:10 | 5:10 | 5:11 | 5:11 | 5:12 | 5:12 | 5:13 | 5:14 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 10.2 | 6:52 | 5:04 |
| 2 | 10.2 | 6:53 | 5:04 |
| 3 | 10.2 | 6:54 | 5:04 |
| 4 | 10.2 | 6:54 | 5:04 |
| 5 | 10.1 | 6:55 | 5:04 |
| 6 | 10.1 | 6:56 | 5:04 |
| 7 | 10.1 | 6:57 | 5:04 |
| 8 | 10.1 | 6:57 | 5:04 |
| 9 | 10.1 | 6:58 | 5:04 |
| 10 | 10.1 | 6:59 | 5:04 |
| 11 | 10.1 | 6:59 | 5:05 |
| 12 | 10.1 | 7:00 | 5:05 |
| 13 | 10.1 | 7:01 | 5:05 |
| 14 | 10.1 | 7:01 | 5:05 |
| 15 | 10.1 | 7:02 | 5:06 |
| 16 | 10.1 | 7:02 | 5:06 |
| 17 | 10.1 | 7:03 | 5:06 |
| 18 | 10.1 | 7:04 | 5:07 |
| 19 | 10.1 | 7:04 | 5:07 |
| 20 | 10.1 | 7:05 | 5:08 |
| 21 | 10.0 | 7:05 | 5:08 |
| 22 | 10.0 | 7:06 | 5:09 |
| 23 | 10.0 | 7:06 | 5:09 |
| 24 | 10.1 | 7:06 | 5:10 |
| 25 | 10.1 | 7:07 | 5:10 |
| 26 | 10.1 | 7:07 | 5:11 |
| 27 | 10.1 | 7:08 | 5:11 |
| 28 | 10.1 | 7:08 | 5:12 |
| 29 | 10.1 | 7:08 | 5:12 |
| 30 | 10.1 | 7:09 | 5:13 |
| 31 | 10.1 | 7:09 | 5:14 |
Solar energy in December
Average shortwave solar energy reaching the ground each day in December, about 2.67 kWh/m² — the year's lowest.
For context, solar energy here swings from a low near 2.67 kWh/m² to a high of 6.18 kWh/m² in May across the year — December's 2.67 kWh/m² sits near the bottom.
| 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) | 2.9 | 2.9 | 2.9 | 2.9 | 2.8 | 2.8 | 2.8 | 2.8 | 2.7 | 2.7 | 2.7 | 2.7 | 2.7 | 2.7 | 2.6 | 2.6 | 2.6 | 2.6 | 2.6 | 2.6 | 2.6 | 2.6 | 2.6 | 2.6 | 2.6 | 2.6 | 2.6 | 2.6 | 2.6 | 2.6 | 2.6 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 2.9 | Moderate |
| 2 | 2.9 | Moderate |
| 3 | 2.9 | Moderate |
| 4 | 2.9 | Moderate |
| 5 | 2.8 | Moderate |
| 6 | 2.8 | Moderate |
| 7 | 2.8 | Moderate |
| 8 | 2.8 | Moderate |
| 9 | 2.7 | Moderate |
| 10 | 2.7 | Moderate |
| 11 | 2.7 | Moderate |
| 12 | 2.7 | Moderate |
| 13 | 2.7 | Moderate |
| 14 | 2.7 | Moderate |
| 15 | 2.6 | Moderate |
| 16 | 2.6 | Moderate |
| 17 | 2.6 | Moderate |
| 18 | 2.6 | Moderate |
| 19 | 2.6 | Moderate |
| 20 | 2.6 | Moderate |
| 21 | 2.6 | Moderate |
| 22 | 2.6 | Moderate |
| 23 | 2.6 | Moderate |
| 24 | 2.6 | Moderate |
| 25 | 2.6 | Moderate |
| 26 | 2.6 | Moderate |
| 27 | 2.6 | Moderate |
| 28 | 2.6 | Moderate |
| 29 | 2.6 | Moderate |
| 30 | 2.6 | Moderate |
| 31 | 2.6 | Moderate |
Hazard calendar for Lafayette
None of Lafayette's seasonal hazards are active in December. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.
Lafayette sits in the Atlantic hurricane belt; the season peaks August–October.
Is December a good time to visit Lafayette?
Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
December is a reasonable time to visit Lafayette for sightseeing.
What to pack for Lafayette in December
From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In December, Lafayette sees daytime highs around 64°F and nights near 46°F. Worth packing: a warm layer and rain gear. About 9 days see rain.
Sea temperature near Lafayette in December
The nearest coast averages about 62°F in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 42 mi away) is warmest in August at about 86°F and coldest in January near 58°F.
It's comfortable for a long swim from Mar 30 to Nov 15 — about 7.6 months when the water holds above 68°F.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°F) | 58 | 60 | 65 | 72 | 78 | 84 | 86 | 86 | 83 | 76 | 68 | 62 |
| Comfort | Bracing | Cool | Cool | Refreshing | Warm | Tropical | Tropical | Tropical | Tropical | Warm | Cool | Cool |
| Sea temperature (°F) | Comfort | |
|---|---|---|
| Jan | 58 | Bracing |
| Feb | 60 | Cool |
| Mar | 65 | Cool |
| Apr | 72 | Refreshing |
| May | 78 | Warm |
| Jun | 84 | Tropical |
| Jul | 86 | Tropical |
| Aug | 86 | Tropical |
| Sep | 83 | Tropical |
| Oct | 76 | Warm |
| Nov | 68 | Cool |
| Dec | 62 | Cool |
UV index in Lafayette in December
Clear-sky midday UV in December peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Lafayette peaks around July 13 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 4 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 4 | 6 | 7 | 10 | 10 | 10 | 10 | 9 | 8 | 6 | 5 | 4 |
| Level | Moderate | High | High | Extreme | Very high | Very high | Extreme | Very high | Very high | High | Moderate | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 4 | Moderate |
| Feb | 6 | High |
| Mar | 7 | High |
| Apr | 10 | Extreme |
| May | 10 | Very high |
| Jun | 10 | Very high |
| Jul | 10 | Extreme |
| Aug | 9 | Very high |
| Sep | 8 | Very high |
| Oct | 6 | High |
| Nov | 5 | Moderate |
| Dec | 4 | Moderate |
Air quality in Lafayette in December
Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.
Air quality in Lafayette is worst in July — around 22 µg/m³ PM2.5 (moderate), about 2.7× the cleanest month (December, 8 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 14 | 13 | 11 | 11 | 14 | 18 | 22 | 16 | 12 | 9 | 13 | 8 |
| Level | Moderate | Moderate | Good | Good | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Moderate | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 14 | Moderate |
| Feb | 13 | Moderate |
| Mar | 11 | Good |
| Apr | 11 | Good |
| May | 14 | Moderate |
| Jun | 18 | Moderate |
| Jul | 22 | Moderate |
| Aug | 16 | Moderate |
| Sep | 12 | Moderate |
| Oct | 9 | Good |
| Nov | 13 | Moderate |
| Dec | 8 | Good |
Where is Lafayette?
Lafayette sits at 30.2°N, 92.0°W, 36 ft above sea level, in United States. The nearest listed city is New Iberia, 19 mi away.
Topography around Lafayette
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Lafayette.
Within 2 miles, the terrain around Lafayette has only modest variations in elevation — a maximum elevation change of 85 ft around an average of 43 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 121 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 233 ft.
The land around Lafayette is covered by trees (41%) and artificial surfaces (41%) within 2 miles, trees (40%) and grassland (37%) within 10 miles, and trees (38%) and cropland (26%) 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 Lafayette (30.2241°, -92.0198°, elevation 36 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).