Siliana weather in May

In May, Siliana sees average daytime highs of 24°C and overnight lows near 13°C, with 39 mm of rain across 7.1 wet days and about 13.9 hours of daylight. It is the 5th-warmest and 5th-wettest month of the year here.

Highs climb over the month, from about 22°C in the first days to 26°C by the end. The sky is clear or mostly clear about 46% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 24 min at the start of May to 14 h 12 min by month's end. Set against the rest of the year, May is Siliana's 5th-clearest and 7th-windiest month. For the whole year in context, see Siliana's year-round climate.

Daytime high
24°
5th warmest
Overnight low
13°
7th coldest
Rainfall
39 mm
7.1 wet days
Daylight
13 h 54 min
5:22 AM – 7:16 PM
Cloud cover
44%
5th clearest
Wind
10 km/h
7th windiest
Solar energy
6.75 kWh/m²
Travel score
7.6
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 22°C in the first days to 26°C by the end.

A typical May day in Siliana reaches about 24°C in the afternoon and slips back to 13°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 30°C. Set against its neighbours, May runs about 5°C warmer than April and about 5°C cooler than June.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
12211
22211
32211
42211
52312
62312
72312
82312
92312
102412
112412
122412
132413
142413
152413
162413
172513
182513
192513
202513
212514
222514
232514
242614
252614
262614
272614
282615
292615
302715
312715

How May really feels in Siliana

Once humidity and wind are folded in, May averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

May sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Siliana weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan12° / 457.90.59.83.6
Feb13° / 388.20.510.63.9
Mar16° / 528.90.111.75.3
Apr20° / 508.70.112.96.5
May24° / 13°397.1013.97.6
Jun30° / 17°244.5014.46.3
Jul33° / 20°92.9014.24.5
Aug33° / 20°214.8013.44.3
Sep28° / 17°467.7012.26.4
Oct24° / 13°386.9011.17.5
Nov18° / 366.2010.16.3
Dec14° / 3870.29.64.3

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 46% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 20% of May, with mostly cloudy or overcast conditions the remaining 34%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16238
26337
36337
46337
56337
66436
76436
86535
96535
106535
116535
126535
136634
146535
156634
166535
176535
186634
196634
206634
216733
226733
236733
246832
256733
266832
276832
286931
296931
307030
317030

Chance of precipitation in May

Any precipitation

Siliana gets around 39 mm of rain over 7.1 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 23% and peaks near 25% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
125
225
325
424
524
624
724
823
923
1023
1123
1223
1323
1423
1523
1623
1723
1823
1923
2023
2123
2222
2322
2422
2522
2621
2721
2821
2921
3021
3120

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

Most of May feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, May lands in the dry band about 87% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19550
29460
39460
49370
59370
69280
79280
89190
99190
1090100
1190100
1290100
1388111
1488111
1587121
1687121
1786131
1886131
1985141
2085141
2183152
2283152
2382162
2482162
2581172
2681172
2781172
2880182
2980182
3079192
3179192

Wind in May

Winds average 10 km/h in May.

Across May, daily wind ranges from about 10 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 24 min at the start of May to 14 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 48 minutes over May. Sunrise moves from 5:36 AM to 5:12 AM, and sunset from 7:03 PM to 7:27 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.45:367:03
213.55:357:04
313.55:347:05
413.55:337:06
513.65:327:07
613.65:317:08
713.65:307:08
813.75:297:09
913.75:287:10
1013.75:277:11
1113.85:267:12
1213.85:257:13
1313.85:247:13
1413.95:237:14
1513.95:227:15
1613.95:227:16
1713.95:217:17
1814.05:207:18
1914.05:197:18
2014.05:197:19
2114.05:187:20
2214.15:177:21
2314.15:177:22
2414.15:167:22
2514.15:157:23
2614.25:157:24
2714.25:147:25
2814.25:147:25
2914.25:137:26
3014.25:137:27
3114.25:127:27

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 6.75 kWh/m².

For context, solar energy here swings from a low near 2.34 kWh/m² to a high of 7.6 kWh/m² in July across the year — May's 6.75 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.4Intense
26.4Intense
36.5Intense
46.5Intense
56.5Intense
66.6Intense
76.6Intense
86.6Intense
96.6Intense
106.7Intense
116.7Intense
126.7Intense
136.7Intense
146.7Intense
156.7Intense
166.7Intense
176.8Intense
186.8Intense
196.8Intense
206.8Intense
216.8Intense
226.8Intense
236.8Intense
246.8Intense
256.9Intense
266.9Intense
276.9Intense
286.9Intense
297.0Intense
307.0Intense
317.0Intense
Planning a trip in May

Hazard calendar for Siliana

In seasonPeak

None of Siliana's seasonal hazards are active in May. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Siliana sees seasonal dust haze (June), heaviest in June.

Dust
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is May a good time to visit Siliana?

Our two travel scores rate May for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

7.6
Sightseeing
1st-best month of the year
6.4
Beach & pool
5th-best month of the year

May is one of the better times to visit Siliana for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Siliana in May

From May's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In May, Siliana sees daytime highs around 24°C and nights near 13°C. Pack sun protection. Worth having: light clothes. About 7 days see rain.

sun protectionlight clothes

UV index in Siliana in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Siliana peaks around July 16 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highVery highHighModerateJul 16UV 10Dec 21UV 2
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar6High
Apr5Moderate
May8Very high
Jun9Very high
Jul10Extreme
Aug8Very high
Sep8Very high
Oct6High
Nov3Moderate
Dec2Moderate

Air quality in Siliana in May

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where May falls, not just the annual average.

Air quality in Siliana is worst in September — around 24 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateSep 1724 µg/m³Dec 2118 µg/m³
PM2.5 (µg/m³)Level
Jan18Moderate
Feb19Moderate
Mar21Moderate
Apr24Moderate
May22Moderate
Jun22Moderate
Jul21Moderate
Aug22Moderate
Sep24Moderate
Oct22Moderate
Nov20Moderate
Dec17Moderate
Location & terrain

Where is Siliana?

Siliana sits at 36.1°N, 9.4°E, 428 m above sea level, in Tunisia. The nearest listed city is Tabursuq, 43 km away.

DahmaniEl FahsEl KefMedjez el BabJendoubaBéjaTajerouine

Topography around Siliana

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Siliana.

Within 3 km, the terrain around Siliana has only modest variations in elevation — a maximum elevation change of 73 m around an average of 431 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 723 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,360 m.

The land around Siliana is covered by cropland (74%) within 3 km, cropland (62%) and grassland (24%) within 16 km, and cropland (51%) and grassland (32%) within 80 km.

3 km
73 m
16 km
723 m
80 km
1,360 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Tabursuq 43 km · Dahmani 51 km · El Fahs 58 km · El Kef 61 km · Medjez el Bab 66 km · Jendouba 70 km · Béja 73 km · Tajerouine 77 km

Tunisia travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / E
230 V · 50 Hz
Prices
≈ 29% of US
price level, 2025
GDP per capita
$4,657
2025
Happiness
4.8 / 10
World Happiness, 2025
Safe drinking water
65%
of population, 2024
Homicide rate
4.7
per 100k, 2020
Road deaths
16.5
per 100k/yr, 2019
Income group
Lower middle
World Bank
English
Low
EF EPI 498
Religion
Muslim 99%

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 Siliana (36.085°, 9.3708°, elevation 428 m), 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. 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).