The weather will be fair in general across the country today but humidity is set to rise sharply.
Relative humidity will rise by the evening and in the morning to a high of 95 per cent over some coastal and internal areas, with a chance of fog.
The NCMS also warned that the sea will be "rough to very rough" in the Arabian Gulf.
Clouds are set to appear over some eastern areas of the country by afternoon, the National Centre of Meteorology and Seismology reports.
There will be light to moderate winds in general over land, and fresh over sea becoming strong at times westward.
Temperatures will reach a maximum of 42C in inland areas, 39C in coastal and 34C in mountain areas to a minimum of between 20C and 22C across the country.