Your May weather guide
HotWeather in Port El Kantaoui in May
May is a good time to visit Port El Kantaoui if you want warm days without making intense heat the point of the holiday. Average highs are around 26°C, while nights cool to about 15°C, so pack for a change after sunset. The main catch is the sea: at roughly 19°C, it is bracing rather than comfortably warm. This month suits sunbathing and time outdoors better than long, leisurely swims.
Long-term climate averages for Port el Kantaoui, not a forecast · 1991-2020
Port El Kantaoui, month by month
Your snapshot
At a glance
The useful details for Port el Kantaoui.
- Average daytime high
- 26.3°C
- 9 in 10 days stay below 31°C
- Average night-time low
- 15.4°C
- coldest 10% of nights: 12°C or lower
- Compared with London
- +9.7°C
- London averages 16.6°C in May
- Sea temperature
- 18.8°C
- year to year: 18°C to 20°C
- Sunshine per day (est.)
- 8.9h
- 64% of 13.9 h of daylight
- Rainy days (1 mm+)
- 4
- 17 mm over the month
- Humidity
- 62%
- Days over 25°C
- 62%
- 13% over 30°C
- Record high 1991-2020
- 42.1°C
- 2006-05-22
- Record low 1991-2020
- 9.3°C
- 1992-05-03
- Flight from London
- ≈ 3 h 6 min
- 1902 km, short-haul (estimate for a direct flight)
Records are observed extremes within 1991-2020, not typical holiday conditions. Warm-day percentages are shares of days, not day counts.
How May compares
May is the 5th warmest month of the year in Port El Kantaoui. Within Tunisia it is 2nd of 3 (Tunisia in May). Against London's average high of 16.6°C in May, Port El Kantaoui is 9.7°C warmer by day and 7.1°C warmer at night.
Daytime and night-time in May
The typical May day in Port El Kantaoui peaks at 26.3°C, but that is an average: the warmest 10% of days reach 30.9°C or more. About 62% of days top 25°C and 1 in 7 pass 30°C. Nights average 15.4°C; one night in ten drops to 12.4°C or lower, so pack a layer for evenings. Between 1991 and 2020 the hottest May day here reached 42.1°C (2006-05-22) and the coldest night 9.3°C (1992-05-03).
Rain in May
Some rain (4-8 rainy days): about 4 days with 1 mm or more, 17 mm in total. Year to year it varies a lot - the wettest May was 2011 with 49 mm, the driest 1995 with 0 mm. Humidity averages 62%.
Sea temperature in May
The sea averages 18.8°C - bracing (18-22°c). Depending on the year it ranges from 18.1°C to 19.5°C. For the warmest sea here, come in August (26.8°C).
Sunshine and daylight
Around 8.9 hours of sunshine a day (estimated from cloud cover), 13.9 hours of daylight: the sun rises about 05:12 and sets about 19:16 local time in mid-May. Average cloud cover is 36%.
Is May a good time to visit Port El Kantaoui?
Yes - it is one of the better months: hot days, manageable rain and long sunny days. The best months for Port El Kantaoui on our scoring are June, May, September; months averaging 25°C or more: May, Jun, Jul, Aug, Sep, Oct.
Warm enough for summer clothes, but bring an evening layer
Daytime warmth is fairly dependable: 62% of May days reach 25°C, making light clothing a sensible starting point. It is not consistently very hot, though, with 13% of days reaching 30°C. Plan more active time for the morning if you find midday heat tiring, and keep shade and sunscreen part of your routine. Evenings need a different approach. The average night low is around 15°C, and the coldest nights can drop to about 12°C or below. A jumper or light jacket is useful for sitting outside after dark. May suits travellers who like warm afternoons but prefer some relief from the heat overnight.
Plenty of sunshine, with a cool sea and some rain
Around 8.9 hours of sunshine within 13.9 hours of daylight gives you plenty of scope for time outdoors, but do not expect uninterrupted blue skies. May brings about 4 rainy days, so keep plans flexible rather than assuming every afternoon will be dry. A light waterproof is a sensible addition without making wet weather the focus of your packing. The sea is the bigger compromise: its average of 18.8°C is bracing, and the year-to-year range of 18°C to 20°C stays below the comfortable-swimming benchmark of 22°C. If you enjoy a refreshing dip, that may be acceptable; if warm water is central to your holiday, May is less convincing. Choose it primarily for sunshine and warm air, not reliably comfortable sea swimming.
A little perspective
Port El Kantaoui through the year
May is highlighted. See how it compares with the rest of the year.
| Month | Day | Night | Sea | Sun/day | Rain mm | Rainy days | Days 25°C+ |
|---|---|---|---|---|---|---|---|
| January | 16.4°C | 7.9°C | 15.8°C | 5.6 | 29 | 5 | 0% |
| February | 17.0°C | 8.0°C | 14.6°C | 6.3 | 24 | 5 | 2% |
| March | 19.6°C | 9.8°C | 14.8°C | 6.9 | 40 | 6 | 8% |
| April | 22.3°C | 12.1°C | 16.1°C | 7.6 | 25 | 6 | 20% |
| MaySelectedbest | 26.3°C | 15.4°C | 18.8°C | 8.9 | 17 | 4 | 62% |
| Junebest | 30.4°C | 19.0°C | 22.3°C | 11.1 | 7 | 2 | 95% |
| July | 33.5°C | 21.8°C | 25.4°C | 12.9 | 2 | 0 | 100% |
| August | 33.8°C | 22.7°C | 26.8°C | 11.4 | 9 | 2 | 100% |
| Septemberbest | 30.0°C | 21.0°C | 26.1°C | 7.9 | 43 | 5 | 95% |
| October | 26.1°C | 17.6°C | 23.9°C | 6.4 | 44 | 6 | 62% |
| November | 21.2°C | 13.0°C | 21.1°C | 5.8 | 28 | 5 | 11% |
| December | 17.5°C | 9.3°C | 18.1°C | 5.6 | 27 | 5 | 1% |
Day = average daytime high, night = average night-time low, 1991-2020.Sun is hours per day; rainy days count 1 mm or more.
Day, night and sea
Monthly average temperatures, 1991-2020
- Day
- Night
- Sea
Best months here
On warmth, low rainfall and sunshine, start with these.
Keep exploring
Similar in May
Closest matches on daytime temperature, sea temperature and sunshine, in other countries.
A little more detail
Port El Kantaoui in May FAQs
Plain answers, grounded in the averages.
Is Port El Kantaoui hot in May?
Port El Kantaoui is hot in May: the average daytime high is 26.3°C and nights average 15.4°C. About 62% of May days reach 25°C or more.
Can you swim in the sea in Port El Kantaoui in May?
The sea around Port El Kantaoui averages 18.8°C in May, which is bracing - fine for a quick dip, cool for long swims. Between 1991 and 2020 it ranged from 18°C to 20°C depending on the year.
How much does it rain in Port El Kantaoui in May?
Port El Kantaoui sees about 4 rainy days (1 mm or more) and 17 mm of rain in a typical May. The wettest May between 1991 and 2020 was 2011 (49 mm) and the driest was 1995 (0 mm).
How sunny is Port El Kantaoui in May?
Port El Kantaoui gets around 8.9 hours of sunshine a day in May out of 13.9 hours of daylight (estimated from average cloud cover).
How does Port El Kantaoui compare with the UK in May?
Port El Kantaoui is on average 9.7°C warmer than London by day in May (26.3°C against 16.6°C).
What is the hottest May on record in Port El Kantaoui?
Between 1991 and 2020 the hottest May day in Port El Kantaoui reached 42.1°C on 2006-05-22, and the coldest night dropped to 9.3°C on 1992-05-03.
How much warmer is Port El Kantaoui than London in May?
The average daytime high is 26.3°C, compared with 16.6°C in London, a difference of 9.7°C. That makes May a substantial step up in daytime warmth for a UK traveller, although you should still bring a layer for evenings.
How long is the flight from London?
The flight from London is about 3 h 6 min, making this a short-haul option for May warmth. The weather trade-off is straightforward: warm afternoons and plenty of sunshine, but a sea that still feels bracing.
About these averages
ERA5-Land climate reanalysis via Open-Meteo (11 km grid) and NOAA Coral Reef Watch 5 km sea temperatures, 1991-2020
Averages computed from daily values at Port el Kantaoui. Sea temperature from the nearest 5 km sea cell, 2.6 km from that point. Sunshine hours are estimated from average cloud cover.Records are the highest and lowest daily values in that 30-year period, not all-time records. These are climate averages, not a forecast for your trip. How we measure holiday weather
- Hot · 25°C+
- Warm · 20°C to below 25°C
- Mild · 15°C to below 20°C
- Cool · below 15°C