Weather in Surat in May
India · 20-year averages, May
The month to avoid. Of the twelve, May is the one to avoid. Daytime highs average 40.1 °C and the afternoon is not negotiable — outdoor plans move to early morning or evening.
May ranks 12 of 12 — near the bottom of Surat's year. January is the month that works, and the swing between the two is 44 points, which is a different holiday rather than a slightly better one.
Rain falls on only 1 days, so an itinerary with no wet-weather fallback is a reasonable risk. Pack for heat management rather than style: shade, water, and a schedule that gives up on the middle of the day.
What the averages hide
Averages flatten a month, and this one hides a few things: 31 days of the month clear 35 °C — that is not a heatwave, it is the month. Across the twenty years measured, the hottest May day reached 46.6 °C and the coldest night fell to 23.4 °C, and the wettest single day dropped 34 mm — roughly 567% of the month's rain in one day.
May is dependably dry, and that reliability is the point: across the twenty years measured, the wettest May on record still only managed 51 mm, and the driest managed 0 mm. There is no meaningful variability to plan around, which makes this one of the few months anywhere that you can build a fixed outdoor itinerary against without a fallback. The wettest single day in twenty years of Mays brought 34 mm. Rain simply is not the variable that decides this trip — heat, crowds and cost are.
Wind is light at 13.8 km/h, so the temperature on the page is close to the temperature on your skin, and humidity is unremarkable at 56%.
How May sits in the year
Temperatures hold steady either side: 40.9 °C in April, 40.1 here, 34.4 in June. Nothing about the timing within the month matters much. Rain is the thing that moves: June brings 16 days more of it, so the earlier half of a flexible trip is the safer half.
Daylight in May
May is at or near the longest days of Surat's year: 13.1 hours of daylight, gaining 0.4 hours across the month. Evenings are the real gain — dinner outdoors still happens in full light.
Sea temperature
The sea sits at about 29 °C in May — warm enough that the water offers no relief from the heat. This is the warmest the water gets all year.
How busy it gets
Off season. The genuine off season: cheapest by a distance, with the caveat that some tours and restaurants close entirely.
Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.
May in Surat versus nearby
If Surat is one option among several, the nearby comparison is worth making. Nashik is close enough to be a coin toss — 2 °C cooler, 1 day more rain. Virār is a better bet in May — 10.1 °C cooler, 2 days more rain.
So: May is a compromise. January is 44 points better and is what Surat is actually like at its best — worth moving the trip for if that is possible, and worth adjusting expectations for if it is not.
Every month in Surat
| Month | High °C | Low °C | Rain days | Rain mm | Humidity % | Daylight h | Sea °C | Score |
|---|---|---|---|---|---|---|---|---|
| January | 32.7 | 15.7 | 0 | 1 | 36 | 11 | 24.6 | 74 |
| February | 35.1 | 17.7 | 0 | 3 | 37 | 11.4 | 24.4 | 48 |
| March | 38.4 | 21 | 0 | 2 | 39 | 12 | 25.8 | 30 |
| April | 40.9 | 24.2 | 1 | 2 | 48 | 12.6 | 27.6 | 30 |
| May | 40.1 | 26.9 | 1 | 6 | 56 | 13.1 | 29 | 30 |
| June | 34.4 | 27.3 | 17 | 346 | 74 | 13.4 | 29.7 | 32 |
| July | 30.3 | 25.9 | 27 | 572 | 87 | 13.3 | 28.7 | 44 |
| August | 29.5 | 25 | 24 | 437 | 89 | 12.9 | 27.9 | 46 |
| September | 30.6 | 24.5 | 18 | 270 | 86 | 12.3 | 28.6 | 43 |
| October | 33 | 22.1 | 6 | 43 | 70 | 11.7 | 29.2 | 62 |
| November | 34.1 | 19.3 | 2 | 9 | 55 | 11.1 | 27.9 | 65 |
| December | 33.3 | 17 | 0 | 3 | 42 | 10.9 | 26.3 | 72 |
Planning the rest of the trip
- Where to eat & stay in Surat every café, restaurant and hotel
- Flight time to Surat how long you are actually in the air
- Surat time zone and the difference from home
- Days until your trip count down to the departure date