Chennai is witnessing intense heatwave like weather conditions on May 22, 2026, with temperatures soaring between 37°C and 42°C across several parts of the city. According to the latest weather outlook, coastal humidity levels are making the conditions even more uncomfortable, pushing the daytime Feels Like temperature close to 47°C in some areas. The India Meteorological Department (IMD) has indicated that the city will remain extremely hot and humid throughout the day, although isolated evening showers or thunderstorms may develop later tonight with a limited 25 percent rain probability. The current weather pattern suggests that Chennai residents could continue experiencing uncomfortable heat and sticky humidity through the coming week.
Chennai Weather Today: Heatwave Conditions Intensify
The latest forecast shows that Chennai is currently under severe daytime heat conditions, especially during afternoon hours when both temperature and humidity combine to create dangerous outdoor exposure levels. Authorities and weather experts are advising residents to avoid direct sunlight during peak afternoon hours, stay hydrated throughout the day, limit outdoor activity, and use proper sun protection. The UV index has also climbed to extremely high levels, increasing the risk of dehydration, heat exhaustion, and sunburn.
Chennai Hourly Weather Forecast for May 22, 2026
| Time Period | Sky Condition | Temperature | Feels Like | Rain Chance |
|---|---|---|---|---|
| Morning (8 AM – 11 AM) | Sunny | 34°C to 37°C | 41°C to 46°C | 0% |
| Afternoon (12 PM – 4 PM) | Sunny to Partly Sunny | 36°C to 37°C | 45°C to 47°C | 0% |
| Evening (5 PM – 7 PM) | Isolated Showers Possible | Around 34°C | Around 43°C | 25% |
| Night (8 PM – 11 PM) | Clear to Partly Cloudy | 31°C to 32°C | 39°C to 41°C | 5% |
The afternoon period will likely be the most dangerous part of the day due to extreme heat exposure. The Feels Like temperature reaching 47°C means the human body may experience conditions much hotter than the actual recorded air temperature.
Why Chennai Feels Much Hotter Than Actual Temperature
One of the major reasons behind the uncomfortable weather conditions is Chennai coastal humidity. According to the weather details:
- Humidity may fluctuate between 51 percent and 75 percent
- Moisture levels rise sharply after sunset
- Humid air prevents sweat from evaporating efficiently
This leads to a dangerous increase in the Feels Like or heat index temperature. Even when the actual temperature remains around 37°C, the body may experience conditions closer to 45°C to 47°C because of trapped heat and moisture in the atmosphere.
UV Index Reaches Dangerous Levels
The forecast also warns that Chennai UV index could peak at 10 out of 11 during midday hours. This falls under the extreme exposure category and significantly raises the risk of sunburn, heat stress, dehydration, fatigue, and skin damage from prolonged sunlight exposure. People working outdoors, commuting during afternoon hours, or participating in physical activities are advised to take extra precautions.
Chennai Weekly Weather Forecast: May 22 to May 28, 2026
The city is expected to remain consistently hot through the upcoming week, although scattered clouds and occasional thunderstorm activity may appear during some evenings.
| Day | Weather | Temperature | Rain Chance |
|---|---|---|---|
| Friday, May 22 | Sunny / Partly Cloudy | 37°C / 31°C | 25% (Evening) |
| Saturday, May 23 | Mostly Cloudy | 37°C / 30°C | 95% (Late Night) |
| Sunday, May 24 | Mostly Cloudy | 37°C / 29°C | 45% |
| Monday, May 25 | Mostly Cloudy | 37°C / 29°C | 10% |
| Tuesday, May 26 | Mostly Sunny | 37°C / 29°C | 15% |
| Wednesday, May 27 | Partly Sunny with Periodic Clouds | 37°C / 29°C | 35% |
| Thursday, May 28 | Mostly Sunny | 37°C / 29°C | 10% |
Saturday night currently shows the highest possibility of thunderstorms and gusty rainfall activity.
Chennai Heatwave Safety Guidelines
With extreme heat dominating daytime conditions, residents are being advised to follow proper heat safety measures.
- Stay Hydrated: Drink 3 to 4 litres of water daily, use ORS or electrolyte drinks if outdoors for long periods, and consume tender coconut water and buttermilk regularly
- Avoid Peak Heat Hours: The most dangerous period for outdoor exposure is between 11:00 AM and 4:00 PM when UV exposure is highest, heat index temperatures peak, and risk of dehydration increases rapidly
- Best Time for Outdoor Activities: The safest outdoor timing windows are 5:00 AM to 7:30 AM and after 6:30 PM
- Clothing and Sun Protection: Wear loose fitting cotton clothes, choose light coloured fabrics, use SPF 50 plus sunscreen, wear sunglasses with UV protection, and use hats or umbrellas when outdoors
Food and Diet Recommendations During Heatwave
The weather advisory also suggests eating lighter and water rich foods during this heat period.
| Recommended Foods | Foods to Avoid |
|---|---|
| Watermelon | Heavy oily meals |
| Cucumber | Excessive caffeine |
| Citrus fruits | Sugary soft drinks |
| Curd rice | Alcohol |
| Fresh fruit juices | Street food exposed to heat |
| Coconut water |
Indoor Cooling Measures for Homes
Residents staying indoors are advised to keep curtains closed during daytime, reduce direct sunlight entering rooms, stay inside ventilated or air conditioned areas, and avoid using heat generating appliances unnecessarily. Modern shopping malls, libraries, and air conditioned public buildings may provide temporary relief during extreme afternoon heat.
Vulnerable Groups Need Extra Attention
Children, elderly citizens, and pets remain particularly vulnerable during extreme heat conditions. Families are advised to check frequently on elderly family members, prevent pets from prolonged outdoor exposure, and never leave anyone inside parked vehicles. Authorities warn that temperatures inside closed cars can rise to dangerous levels within minutes.
Humidity to Continue Throughout the Week
Even if temperatures remain steady around 37°C, Chennai humidity levels are expected to keep conditions uncomfortable across the city. Weather outlook trends show that relative humidity may remain between 57 percent and 61 percent, Feels Like temperatures may continue exceeding actual readings, and nighttime cooling may remain limited. This means residents may continue facing sticky and uncomfortable conditions even after sunset.
Conclusion
Chennai is currently experiencing severe hot and humid weather conditions, with daytime temperatures reaching up to 42°C and Feels Like temperatures climbing close to 47°C due to intense humidity. Although isolated evening showers and thunderstorms may bring short term relief later this week, overall heatwave like conditions are expected to continue across the city through May 28, 2026. Residents are strongly advised to stay hydrated, avoid direct afternoon sunlight, wear protective clothing, and monitor weather updates regularly as Chennai continues facing one of its hottest periods of the season.
Frequently Asked Questions
Q1. What is the Feels Like temperature in Chennai today?
A1. The Feels Like temperature in Chennai is expected to reach close to 47°C during afternoon hours due to high coastal humidity levels.
Q2. What is the rain probability in Chennai for today?
A2. There is a 25 percent chance of isolated evening showers or thunderstorms developing later tonight.
Q3. What is the UV index level in Chennai today?
A3. The UV index could peak at 10 out of 11 during midday hours, falling under the extreme exposure category.
Q4. When is the highest rainfall probability expected this week?
A4. Saturday night into Sunday morning currently shows the highest possibility of thunderstorms with rain probability as high as 95 percent.
Q5. What are the peak heat hours to avoid in Chennai?
A5. The most dangerous period for outdoor exposure is between 11:00 AM and 4:00 PM when UV exposure and heat index temperatures are at their highest.