Sulphur in Spring
In spring (March, April and May), Sulphur sees average daytime highs around 77°F and overnight lows near 61°F, with 13.0 in of rain over about 31 wet days across the season. It is the 3rd-warmest season and the driest season of the year.
Over the season highs climb from about 68°F in early March to 86°F by late May. The sky is clear or mostly clear about 34% of the time across spring, and the air most often feels dry.
Spring is Sulphur's best season of the year to visit on our travel score. For the whole year in context, see Sulphur's year-round climate.
- Avg daytime high
- 77°F
- 3rd-warmest season
- Avg overnight low
- 61°F
- Rainfall
- 13.0 in
- 31 wet days
- Avg wind
- 8 mph
- Travel score
- 6.4
- best season of the year
- Months
- Mar · Apr · May
Temperature in Sulphur in Spring
Over the season highs climb from about 68°F in early March to 86°F by late May.
A typical spring day in Sulphur reaches about 77°F and drops to 61°F overnight. The warmest of the three months is May, the coolest March.
How spring really feels in Sulphur
Once humidity and wind are folded in, spring brings about 6 days that feel above 90°F and 0 that feel at or below 32°F.
The story in spring is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Sulphur weather by month
How the three spring months (March, April and May) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 61° / 44° | 5.1 | 9.9 | 10.3 | 5.2 |
| Feb | 65° / 48° | 3.7 | 9.4 | 10.9 | 5.9 |
| Mar | 71° / 54° | 4.1 | 10.3 | 11.8 | 6.6 |
| Apr | 77° / 60° | 4.7 | 10 | 12.7 | 6.9 |
| May | 84° / 68° | 4.2 | 11.1 | 13.5 | 5.6 |
| Jun | 88° / 74° | 5.5 | 15.4 | 13.9 | 3.8 |
| Jul | 90° / 75° | 4.5 | 16.2 | 13.8 | 3.3 |
| Aug | 91° / 75° | 4.9 | 15.7 | 13.1 | 3.3 |
| Sep | 87° / 70° | 5.1 | 11.5 | 12.2 | 4.6 |
| Oct | 80° / 61° | 3.9 | 8.2 | 11.3 | 7.0 |
| Nov | 70° / 51° | 4.3 | 8.8 | 10.5 | 6.8 |
| Dec | 63° / 46° | 4.9 | 9.7 | 10.1 | 5.7 |
Cloud cover in Spring
The sky is clear or mostly clear about 34% of the time across spring.
Chance of precipitation in Spring
Sulphur gets around 13.0 in of rain over 31 wet days across spring. The line is the day-by-day chance of measurable precipitation.
Humidity in Spring
Most of spring feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Spring
Winds average 8 mph across spring.
Sunrise & sunset in Spring
Daylight runs from about 11 h 18 min in early March to 13 h 48 min by late May. The lit band spans sunrise to sunset each day.
Solar energy in Spring
Average shortwave solar energy reaching the ground each day across spring, about 5.5 kWh/m².
Hazard calendar for Sulphur
None of Sulphur's seasonal hazards peak in spring. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do.
Sulphur sits in the Atlantic hurricane belt; the season peaks August–October.
Is spring a good time to visit Sulphur?
Our two travel scores rate spring for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
spring is a reasonable time to visit Sulphur for sightseeing.
What to pack for Sulphur in Spring
From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In spring, Sulphur sees daytime highs around 77°F and nights near 61°F. Pack light clothes and sun protection. Worth having: rain gear. About 31 days see rain.
Sea temperature near Sulphur in Spring
The nearest coast averages about 71°F across spring — 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 59°F.
It's comfortable for a long swim from Apr 1 to Nov 22 — about 7.8 months when the water holds above 68°F.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°F) | 59 | 60 | 65 | 71 | 78 | 84 | 86 | 86 | 84 | 78 | 69 | 63 |
| Comfort | Cool | Cool | Cool | Refreshing | Warm | Tropical | Tropical | Tropical | Tropical | Warm | Refreshing | Cool |
| Sea temperature (°F) | Comfort | |
|---|---|---|
| Jan | 59 | Cool |
| Feb | 60 | Cool |
| Mar | 65 | Cool |
| Apr | 71 | Refreshing |
| May | 78 | Warm |
| Jun | 84 | Tropical |
| Jul | 86 | Tropical |
| Aug | 86 | Tropical |
| Sep | 84 | Tropical |
| Oct | 78 | Warm |
| Nov | 69 | Refreshing |
| Dec | 63 | Cool |
UV index in Sulphur in Spring
Clear-sky midday UV across spring averages 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 Sulphur peaks around July 12 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 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 | Very high | Extreme | 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 | Very high |
| May | 10 | Extreme |
| 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 Sulphur in Spring
Average fine-particle pollution (PM2.5) through the year — so you can see where spring falls, not just the annual average.
Air quality in Sulphur 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) | 10 | 11 | 12 | 11 | 13 | 18 | 22 | 17 | 14 | 11 | 9 | 8 |
| Level | Good | Good | Good | Good | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 10 | Good |
| Feb | 11 | Good |
| Mar | 12 | Good |
| Apr | 11 | Good |
| May | 13 | Moderate |
| Jun | 18 | Moderate |
| Jul | 22 | Moderate |
| Aug | 17 | Moderate |
| Sep | 14 | Moderate |
| Oct | 11 | Good |
| Nov | 9 | Good |
| Dec | 8 | Good |
Where is Sulphur?
Sulphur sits at 30.2°N, 93.4°W, 16 ft above sea level, in United States. The nearest listed city is Lake Charles, 11 mi away.
Topography around Sulphur
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Sulphur.
Within 2 miles, the terrain around Sulphur has only modest variations in elevation — a maximum elevation change of 82 ft around an average of 26 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 144 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 381 ft.
The land around Sulphur is covered by trees (55%) and grassland (25%) within 2 miles, trees (53%) and grassland (28%) within 10 miles, and trees (48%) 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 Sulphur (30.2366°, -93.3774°, elevation 16 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.