Rosetta weather in May

In May, Rosetta sees average daytime highs of 23°C and overnight lows near 19°C, with 1 mm of rain across 0.2 wet days and about 13.6 hours of daylight. It is the 6th-warmest and 8th-wettest month of the year here.

Highs climb over the month, from about 22°C in the first days to 25°C by the end. The sky is clear or mostly clear about 82% of the time in May, and the air most often feels humid.

Daylight stretches from about 13 h 12 min at the start of May to 13 h 54 min by month's end. Set against the rest of the year, May is Rosetta's 5th-clearest and 9th-windiest month. For the whole year in context, see Rosetta's year-round climate.

Daytime high
23°
6th warmest
Overnight low
19°
7th coldest
Rainfall
1 mm
0.2 wet days
Daylight
13 h 36 min
5:07 AM – 6:42 PM
Cloud cover
19%
5th clearest
Wind
16 km/h
9th windiest
Solar energy
7.43 kWh/m²
Travel score
9.3
out of 10

Rosetta is city in Egypt.

Founded
~850 CE

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

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 25°C by the end.

A typical May day in Rosetta reaches about 23°C in the afternoon and slips back to 19°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 26°C. Set against its neighbours, May runs about 3°C warmer than April and about 3°C cooler than June.

15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12218
22218
32218
42218
52218
62318
72318
82318
92318
102319
112319
122319
132319
142319
152319
162419
172419
182419
192419
202420
212420
222420
232420
242420
252420
262420
272520
282520
292521
302521
312521

Rosetta weather by month

How May compares with the rest of the year at a glance. May is the 6th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan17° / 13°447.510.26.1
Feb17° / 13°275.110.96.5
Mar19° / 14°152.611.87.6
Apr21° / 16°41.112.78.4
May23° / 19°10.213.69.3
Jun26° / 22°00149.3
Jul28° / 25°0013.88.7
Aug29° / 25°0013.18.0
Sep28° / 24°10.112.28.7
Oct26° / 22°71.411.28.8
Nov22° / 19°243.710.48.1
Dec19° / 15°366.4106.9

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 82% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 7% of May, with mostly cloudy or overcast conditions the remaining 11%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18515
28515
38515
48515
58515
68515
78614
88614
98614
108614
118614
128713
138713
148713
158812
168911
178911
188911
198911
208911
21919
22919
23919
24919
25928
26937
27937
28946
29946
30946
31964

Chance of precipitation in May

Any precipitation

Rosetta gets around 1 mm of rain over 0.2 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 1% and peaks near 1% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
11
21
31
41
51
61
71
81
91
101
111
121
131
141
151
161
171
181
190
200
210
220
230
240
250
260
270
280
290
300
310

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the humid band about 49% of days. Sticky, muggy-or-worse air turns up on roughly 14% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
11755262
21554292
31354312
41153342
51051363
6950393
7848413
8746434
9645454
10543475
11541486
12440496
13438517
14337528
15335539
163335410
172325511
182305612
192285713
202265715
212245816
222225818
232205820
242185921
252165923
261145926
271135828
281115731
291105534
30185437
31175240

Wind in May

Winds average 16 km/h in May.

Across May, daily wind ranges from about 15 km/h on the calmest days to 16 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
116light breeze
216light breeze
316light breeze
416light breeze
516light breeze
616light breeze
716light breeze
816light breeze
916light breeze
1016light breeze
1116light breeze
1216light breeze
1316light breeze
1416light breeze
1516light breeze
1616light breeze
1716light breeze
1816light breeze
1916light breeze
2015light breeze
2115light breeze
2215light breeze
2315light breeze
2415light breeze
2515light breeze
2615light breeze
2715light breeze
2815light breeze
2915light breeze
3015light breeze
3115light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 12 min at the start of May to 13 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 42 minutes over May. Sunrise moves from 5:19 AM to 4:59 AM, and sunset from 6:32 PM to 6:52 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.25:196:32
213.25:186:33
313.35:176:33
413.35:166:34
513.35:156:35
613.35:156:35
713.45:146:36
813.45:136:37
913.45:126:37
1013.45:116:38
1113.55:106:39
1213.55:106:40
1313.55:096:40
1413.55:086:41
1513.65:076:42
1613.65:076:42
1713.65:066:43
1813.65:066:44
1913.75:056:44
2013.75:046:45
2113.75:046:46
2213.75:036:46
2313.75:036:47
2413.85:026:48
2513.85:026:48
2613.85:016:49
2713.85:016:50
2813.85:016:50
2913.85:006:51
3013.95:006:51
3113.94:596:52

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 7.43 kWh/m².

For context, solar energy here swings from a low near 2.85 kWh/m² to a high of 7.85 kWh/m² in June across the year — May's 7.43 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.1Intense
27.1Intense
37.1Intense
47.2Intense
57.2Intense
67.2Intense
77.2Intense
87.3Intense
97.3Intense
107.3Intense
117.3Intense
127.3Intense
137.4Intense
147.4Intense
157.4Intense
167.5Intense
177.5Intense
187.5Intense
197.5Intense
207.5Intense
217.5Intense
227.6Intense
237.6Intense
247.6Intense
257.6Intense
267.6Intense
277.7Intense
287.7Intense
297.7Intense
307.7Intense
317.7Intense
Planning a trip in May

Hazard calendar for Rosetta

In seasonPeak

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

Rosetta sees seasonal dust haze (May), heaviest in May.

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

Is May a good time to visit Rosetta?

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

9.3
Sightseeing
1st-best month of the year
7.4
Beach & pool
6th-best month of the year

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

What to pack for Rosetta in May

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

In May, Rosetta sees daytime highs around 23°C and nights near 19°C. Pack sun protection. Worth having: light clothes.

sun protectionlight clothes

Sea temperature near Rosetta in May

The nearest coast averages about 21°C in May — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in August at about 28°C and coldest in February near 17°C.

It's comfortable for a long swim from Apr 30 to Dec 18 — about 7.7 months when the water holds above 20°C.

15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan18Cool
Feb17Cool
Mar17Cool
Apr19Cool
May21Refreshing
Jun24Warm
Jul27Warm
Aug28Warm
Sep27Warm
Oct26Warm
Nov23Refreshing
Dec20Refreshing

UV index in Rosetta in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Rosetta peaks around June 20 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 11 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJun 20UV 10Jan 11UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar6High
Apr8Very high
May9Very high
Jun10Extreme
Jul10Extreme
Aug10Very high
Sep9Very high
Oct6High
Nov5Moderate
Dec3Moderate

Air quality in Rosetta 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 Rosetta is worst in January — around 52 µg/m³ PM2.5 (poor), about 2.6× the cleanest month (July, 20 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModeratePoorJan 1651 µg/m³Jul 2020 µg/m³
PM2.5 (µg/m³)Level
Jan52Poor
Feb47Poor
Mar39Poor
Apr33Moderate
May29Moderate
Jun23Moderate
Jul20Moderate
Aug21Moderate
Sep22Moderate
Oct29Moderate
Nov44Poor
Dec47Poor
Location & terrain

Where is Rosetta?

Rosetta sits at 31.4°N, 30.4°E, 15 m above sea level, in Egypt. The nearest listed city is Idkū, 15 km away.

Topography around Rosetta

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

Within 3 km, the terrain around Rosetta has only modest variations in elevation — a maximum elevation change of 21 m around an average of 3 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 30 m; within 80 km, only modest variations in elevation — a maximum elevation change of 54 m.

The land around Rosetta is covered by trees (34%), cropland (26%) and artificial surfaces (21%) within 3 km, water (42%) and cropland (21%) within 16 km, and cropland (45%) and water (41%) within 80 km.

3 km
21 m
16 km
30 m
80 km
54 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetland
May weather nearby: Idkū 15 km · Muţūbas 15 km · Fuwwah 25 km · Al Maḩmūdīyah 26 km · Abū Qīr 35 km · Abū Ḩummuş 35 km · Disūq 37 km · ‘Izbat ‘Alī as Sayyid 37 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
Muslim 90%Christian 10%

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 Rosetta (31.3995°, 30.4172°, 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).