Siwa weather in May

In May, Siwa sees average daytime highs of 33°C and overnight lows near 19°C, with 0 mm of rain across 0.1 wet days and about 13.4 hours of daylight. It is the 5th-warmest and 7th-wettest month of the year here.

Highs climb over the month, from about 31°C in the first days to 34°C by the end. The sky is clear or mostly clear about 79% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 06 min at the start of May to 13 h 42 min by month's end. Set against the rest of the year, May is Siwa's 6th-clearest and 3rd-windiest month. For the whole year in context, see Siwa's year-round climate.

Daytime high: 33°; 5th warmest
Overnight low: 19°; 8th coldest
Rainfall: 0 mm; 0.1 wet days
Daylight: 13 h 30 min; 5:30 AM – 6:58 PM
Cloud cover: 19%; 6th clearest
Wind: 15 km/h; 3rd windiest
Solar energy: 7.84 kWh/m²
Travel score: 5.0; out of 10

← April Siwa year-round climate June →Best places to visit in May

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

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 31°C in the first days to 34°C by the end.

A typical May day in Siwa reaches about 33°C in the afternoon and slips back to 19°C overnight — a 14°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 38°C. Set against its neighbours, May runs about 4°C warmer than April and about 3°C cooler than June.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Avg high (°C)	31	31	31	31	31	31	31	32	32	32	32	32	32	32	33	33	33	33	33	33	33	33	33	34	34	34	34	34	34	34	34
Avg low (°C)	17	17	17	17	17	18	18	18	18	18	18	18	18	19	19	19	19	19	19	19	20	20	20	20	20	20	20	20	20	21	21

	Avg high (°C)	Avg low (°C)
1	31	17
2	31	17
3	31	17
4	31	17
5	31	17
6	31	18
7	31	18
8	32	18
9	32	18
10	32	18
11	32	18
12	32	18
13	32	18
14	32	19
15	33	19
16	33	19
17	33	19
18	33	19
19	33	19
20	33	19
21	33	20
22	33	20
23	33	20
24	34	20
25	34	20
26	34	20
27	34	20
28	34	20
29	34	20
30	34	21
31	34	21

How May really feels in Siwa

Once humidity and wind are folded in, May averages 20 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

heat index over the day's high

Days feeling ≤ 0°C

wind chill below the day's low

The story in May is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Siwa weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 7th-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	18° / 7°	2	0.5	10.3	7.8
Feb	20° / 8°	3	0.7	11	8.3
Mar	24° / 11°	2	0.4	11.8	9.2
Apr	28° / 15°	0	0.1	12.7	7.8
May	33° / 19°	0	0.1	13.4	5.0
Jun	36° / 22°	0	0	13.8	2.9
Jul	37° / 23°	0	0	13.7	2.2
Aug	37° / 24°	0	0	13	2.4
Sep	34° / 22°	0	0	12.2	4.1
Oct	30° / 18°	0	0	11.3	7.0
Nov	24° / 13°	1	0.2	10.5	9.0
Dec	20° / 9°	2	0.5	10.2	8.2

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 79% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 8% of May, with mostly cloudy or overcast conditions the remaining 13%. Skies tend to open up as the month goes on.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Clearer (%)	85	85	85	85	85	85	85	85	85	85	86	86	87	87	87	87	87	87	87	88	88	88	88	89	90	90	90	91	91	91	93
Cloudier (%)	15	15	15	15	15	15	15	15	15	15	14	14	13	13	13	13	13	13	13	12	12	12	12	11	10	10	10	9	9	9	7

	Clearer (%)	Cloudier (%)
1	85	15
2	85	15
3	85	15
4	85	15
5	85	15
6	85	15
7	85	15
8	85	15
9	85	15
10	85	15
11	86	14
12	86	14
13	87	13
14	87	13
15	87	13
16	87	13
17	87	13
18	87	13
19	87	13
20	88	12
21	88	12
22	88	12
23	88	12
24	89	11
25	90	10
26	90	10
27	90	10
28	91	9
29	91	9
30	91	9
31	93	7

Chance of precipitation in May

Any precipitation

Siwa gets around 0 mm of rain over 0.1 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 0% and peaks near 0% on the wettest days.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Rain chance (%)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0

	Rain chance (%)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	0
13	0
14	0
15	0
16	0
17	0
18	0
19	0
20	0
21	0
22	0
23	0
24	0
25	0
26	0
27	0
28	0
29	0
30	0
31	0

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 98% of days. It rarely turns muggy — the humid and sticky bands barely register.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Dry (%)	99	99	99	99	99	99	99	99	99	99	99	99	99	99	99	99	99	99	98	98	98	98	97	97	97	97	96	96	96	96	95
Comfortable (%)	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	2	2	2	2	3	3	3	3	4	4	4	4	5

	Dry (%)	Comfortable (%)
1	99	1
2	99	1
3	99	1
4	99	1
5	99	1
6	99	1
7	99	1
8	99	1
9	99	1
10	99	1
11	99	1
12	99	1
13	99	1
14	99	1
15	99	1
16	99	1
17	99	1
18	99	1
19	98	2
20	98	2
21	98	2
22	98	2
23	97	3
24	97	3
25	97	3
26	97	3
27	96	4
28	96	4
29	96	4
30	96	4
31	95	5

Wind in May

Winds average 15 km/h in May.

Across May, daily wind ranges from about 14 km/h on the calmest days to 15 km/h at its breeziest. It stays fairly steady from day to day.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Wind speed (km/h)	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	14	14	14	14	14	14	14	14	14	14	14	14	14	14	14
Feels	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze

	Wind speed (km/h)	Feels
1	15	light breeze
2	15	light breeze
3	15	light breeze
4	15	light breeze
5	15	light breeze
6	15	light breeze
7	15	light breeze
8	15	light breeze
9	15	light breeze
10	15	light breeze
11	15	light breeze
12	15	light breeze
13	15	light breeze
14	15	light breeze
15	15	light breeze
16	15	light breeze
17	14	light breeze
18	14	light breeze
19	14	light breeze
20	14	light breeze
21	14	light breeze
22	14	light breeze
23	14	light breeze
24	14	light breeze
25	14	light breeze
26	14	light breeze
27	14	light breeze
28	14	light breeze
29	14	light breeze
30	14	light breeze
31	14	light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 06 min at the start of May to 13 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 36 minutes over May. Sunrise moves from 5:42 AM to 5:24 AM, and sunset from 6:48 PM to 7:07 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Daylight (h)	13.1	13.1	13.2	13.2	13.2	13.2	13.3	13.3	13.3	13.3	13.3	13.4	13.4	13.4	13.4	13.5	13.5	13.5	13.5	13.5	13.6	13.6	13.6	13.6	13.6	13.6	13.7	13.7	13.7	13.7	13.7
Sunrise (AM)	5:42	5:41	5:40	5:39	5:38	5:38	5:37	5:36	5:35	5:35	5:34	5:33	5:32	5:32	5:31	5:30	5:30	5:29	5:29	5:28	5:28	5:27	5:27	5:26	5:26	5:26	5:25	5:25	5:24	5:24	5:24
Sunset (PM)	6:48	6:49	6:50	6:50	6:51	6:52	6:52	6:53	6:53	6:54	6:55	6:55	6:56	6:57	6:57	6:58	6:58	6:59	7:00	7:00	7:01	7:02	7:02	7:03	7:03	7:04	7:04	7:05	7:06	7:06	7:07

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	13.1	5:42	6:48
2	13.1	5:41	6:49
3	13.2	5:40	6:50
4	13.2	5:39	6:50
5	13.2	5:38	6:51
6	13.2	5:38	6:52
7	13.3	5:37	6:52
8	13.3	5:36	6:53
9	13.3	5:35	6:53
10	13.3	5:35	6:54
11	13.3	5:34	6:55
12	13.4	5:33	6:55
13	13.4	5:32	6:56
14	13.4	5:32	6:57
15	13.4	5:31	6:57
16	13.5	5:30	6:58
17	13.5	5:30	6:58
18	13.5	5:29	6:59
19	13.5	5:29	7:00
20	13.5	5:28	7:00
21	13.6	5:28	7:01
22	13.6	5:27	7:02
23	13.6	5:27	7:02
24	13.6	5:26	7:03
25	13.6	5:26	7:03
26	13.6	5:26	7:04
27	13.7	5:25	7:04
28	13.7	5:25	7:05
29	13.7	5:24	7:06
30	13.7	5:24	7:06
31	13.7	5:24	7:07

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 7.84 kWh/m².

For context, solar energy here swings from a low near 3.68 kWh/m² to a high of 8.18 kWh/m² in June across the year — May's 7.84 kWh/m² sits near the top of that range.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Solar energy (kWh/m²)	7.6	7.6	7.6	7.6	7.7	7.7	7.7	7.7	7.7	7.8	7.8	7.8	7.8	7.8	7.8	7.8	7.9	7.9	7.9	7.9	7.9	7.9	7.9	8.0	8.0	8.0	8.0	8.0	8.0	8.0	8.0
Level	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense

	Solar energy (kWh/m²)	Level
1	7.6	Intense
2	7.6	Intense
3	7.6	Intense
4	7.6	Intense
5	7.7	Intense
6	7.7	Intense
7	7.7	Intense
8	7.7	Intense
9	7.7	Intense
10	7.8	Intense
11	7.8	Intense
12	7.8	Intense
13	7.8	Intense
14	7.8	Intense
15	7.8	Intense
16	7.8	Intense
17	7.9	Intense
18	7.9	Intense
19	7.9	Intense
20	7.9	Intense
21	7.9	Intense
22	7.9	Intense
23	7.9	Intense
24	8.0	Intense
25	8.0	Intense
26	8.0	Intense
27	8.0	Intense
28	8.0	Intense
29	8.0	Intense
30	8.0	Intense
31	8.0	Intense

Planning a trip in May

Hazard calendar for Siwa

In seasonPeak

In May, Siwa sits inside its dust season. The full year is below, with each hazard's peak months called out.

Siwa sees seasonal dust haze (March–June), heaviest in May.

Dust

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Is May a good time to visit Siwa?

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

5.0

Sightseeing

8th-best month of the year

8.4

Beach & pool

3rd-best month of the year

May is a reasonable time to visit Siwa for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Siwa in May

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

In May, Siwa sees daytime highs around 33°C and nights near 19°C. Pack light clothes and sun protection.

light clothessun protection

UV index in Siwa in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Siwa peaks around August 13 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 14 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	4	7	10	11	11	11	12	10	8	6	4
Level	Moderate	Moderate	Very high	Extreme	Extreme	Extreme	Extreme	Extreme	Very high	Very high	High	Moderate

	UV index (midday)	Level
Jan	4	Moderate
Feb	4	Moderate
Mar	7	Very high
Apr	10	Extreme
May	11	Extreme
Jun	11	Extreme
Jul	11	Extreme
Aug	12	Extreme
Sep	10	Very high
Oct	8	Very high
Nov	6	High
Dec	4	Moderate

Air quality in Siwa 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 Siwa is worst in March — around 51 µg/m³ PM2.5 (poor), about 1.9× the cleanest month (November, 26 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)	46	43	51	49	48	43	35	33	31	28	26	32
Level	Poor	Poor	Poor	Poor	Poor	Poor	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate

	PM2.5 (µg/m³)	Level
Jan	46	Poor
Feb	43	Poor
Mar	51	Poor
Apr	49	Poor
May	48	Poor
Jun	43	Poor
Jul	35	Moderate
Aug	33	Moderate
Sep	31	Moderate
Oct	28	Moderate
Nov	26	Moderate
Dec	32	Moderate

Location & terrain

Where is Siwa?

Siwa sits at 29.2°N, 25.5°E, -15 m above sea level, in Egypt. The nearest listed city is As Sallūm, 264 km away.

Topography around Siwa

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

Within 3 km, the terrain around Siwa has only modest variations in elevation — a maximum elevation change of 27 m around an average of -12 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 139 m; within 80 km, significant variations in elevation — a maximum elevation change of 262 m.

The land around Siwa is covered by trees (44%) and bare terrain (33%) within 3 km, bare terrain (87%) within 16 km, and bare terrain (99%) within 80 km.

3 km

27 m

trees 44%

16 km

139 m

bare terrain 87%

80 km

262 m

bare terrain 99%

treesshrubscroplandartificial surfacesbare terrainwater

← April Siwa year-round climate June →Best places to visit in May

May weather nearby: As Sallūm 264 km · An-Najaylah 265 km · Sīdī Barānī 271 km · Marsá Maţrūḩ 290 km · Al Bawīţī 340 km · El Dabaa 347 km · Tobruk 354 km · Al Ḩammām 415 km

Egypt travel facts

Travel advisory: Level 2; Exercise Increased Caution
Power plugs: Type C / F; 220 V · 50 Hz
Prices: ≈ 15% of US; price level, 2025
GDP per capita: $3,086; 2025
Happiness: 3.9 / 10; World Happiness, 2025
Safe drinking water: 79%; of population, 2024
Homicide rate: 1.3; per 100k, 2017
Road deaths: 10.1; per 100k/yr, 2019
Income group: Lower middle; World Bank
English: Low; EF EPI 459
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 Siwa (29.2032°, 25.5196°, elevation -15 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).

	Avg high (°C)	Avg low (°C)
1	31	17
2	31	17
3	31	17
4	31	17
5	31	17
6	31	18
7	31	18
8	32	18
9	32	18
10	32	18
11	32	18
12	32	18
13	32	18
14	32	19
15	33	19
16	33	19
17	33	19
18	33	19
19	33	19
20	33	19
21	33	20
22	33	20
23	33	20
24	34	20
25	34	20
26	34	20
27	34	20
28	34	20
29	34	20
30	34	21
31	34	21

	Clearer (%)	Cloudier (%)
1	85	15
2	85	15
3	85	15
4	85	15
5	85	15
6	85	15
7	85	15
8	85	15
9	85	15
10	85	15
11	86	14
12	86	14
13	87	13
14	87	13
15	87	13
16	87	13
17	87	13
18	87	13
19	87	13
20	88	12
21	88	12
22	88	12
23	88	12
24	89	11
25	90	10
26	90	10
27	90	10
28	91	9
29	91	9
30	91	9
31	93	7

	Rain chance (%)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	0
13	0
14	0
15	0
16	0
17	0
18	0
19	0
20	0
21	0
22	0
23	0
24	0
25	0
26	0
27	0
28	0
29	0
30	0
31	0

	Dry (%)	Comfortable (%)
1	99	1
2	99	1
3	99	1
4	99	1
5	99	1
6	99	1
7	99	1
8	99	1
9	99	1
10	99	1
11	99	1
12	99	1
13	99	1
14	99	1
15	99	1
16	99	1
17	99	1
18	99	1
19	98	2
20	98	2
21	98	2
22	98	2
23	97	3
24	97	3
25	97	3
26	97	3
27	96	4
28	96	4
29	96	4
30	96	4
31	95	5

	Avg high (°C)	Avg low (°C)
1	31	17
2	31	17
3	31	17
4	31	17
5	31	17
6	31	18
7	31	18
8	32	18
9	32	18
10	32	18
11	32	18
12	32	18
13	32	18
14	32	19
15	33	19
16	33	19
17	33	19
18	33	19
19	33	19
20	33	19
21	33	20
22	33	20
23	33	20
24	34	20
25	34	20
26	34	20
27	34	20
28	34	20
29	34	20
30	34	21
31	34	21

	Clearer (%)	Cloudier (%)
1	85	15
2	85	15
3	85	15
4	85	15
5	85	15
6	85	15
7	85	15
8	85	15
9	85	15
10	85	15
11	86	14
12	86	14
13	87	13
14	87	13
15	87	13
16	87	13
17	87	13
18	87	13
19	87	13
20	88	12
21	88	12
22	88	12
23	88	12
24	89	11
25	90	10
26	90	10
27	90	10
28	91	9
29	91	9
30	91	9
31	93	7

	Rain chance (%)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	0
13	0
14	0
15	0
16	0
17	0
18	0
19	0
20	0
21	0
22	0
23	0
24	0
25	0
26	0
27	0
28	0
29	0
30	0
31	0

	Dry (%)	Comfortable (%)
1	99	1
2	99	1
3	99	1
4	99	1
5	99	1
6	99	1
7	99	1
8	99	1
9	99	1
10	99	1
11	99	1
12	99	1
13	99	1
14	99	1
15	99	1
16	99	1
17	99	1
18	99	1
19	98	2
20	98	2
21	98	2
22	98	2
23	97	3
24	97	3
25	97	3
26	97	3
27	96	4
28	96	4
29	96	4
30	96	4
31	95	5

	Avg high (°C)	Avg low (°C)
1	31	17
2	31	17
3	31	17
4	31	17
5	31	17
6	31	18
7	31	18
8	32	18
9	32	18
10	32	18
11	32	18
12	32	18
13	32	18
14	32	19
15	33	19
16	33	19
17	33	19
18	33	19
19	33	19
20	33	19
21	33	20
22	33	20
23	33	20
24	34	20
25	34	20
26	34	20
27	34	20
28	34	20
29	34	20
30	34	21
31	34	21

	Clearer (%)	Cloudier (%)
1	85	15
2	85	15
3	85	15
4	85	15
5	85	15
6	85	15
7	85	15
8	85	15
9	85	15
10	85	15
11	86	14
12	86	14
13	87	13
14	87	13
15	87	13
16	87	13
17	87	13
18	87	13
19	87	13
20	88	12
21	88	12
22	88	12
23	88	12
24	89	11
25	90	10
26	90	10
27	90	10
28	91	9
29	91	9
30	91	9
31	93	7

	Rain chance (%)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	0
13	0
14	0
15	0
16	0
17	0
18	0
19	0
20	0
21	0
22	0
23	0
24	0
25	0
26	0
27	0
28	0
29	0
30	0
31	0

	Dry (%)	Comfortable (%)
1	99	1
2	99	1
3	99	1
4	99	1
5	99	1
6	99	1
7	99	1
8	99	1
9	99	1
10	99	1
11	99	1
12	99	1
13	99	1
14	99	1
15	99	1
16	99	1
17	99	1
18	99	1
19	98	2
20	98	2
21	98	2
22	98	2
23	97	3
24	97	3
25	97	3
26	97	3
27	96	4
28	96	4
29	96	4
30	96	4
31	95	5