The sound [ei] as in Ray and as in train.

When the letter "a" is  followed by "i" or "y" it is pronounced ei as in the sound of the phoneme eɪ.

Examples:

rain, main, aim, brain, drain, train, stain, remain, explain, complain, fail, mail, sail, rail, raise, raid, afraid, wait, straight, faint, paint. with the letter "i"

ray, gray, play, lay, day, may, say, way, pray, stay, stray, delay, saying, staying, playing, laying, praying, delaying, betrayal, portrayal, layer, player.

 with the letter "y"

There is a lots of AI words in english, make sure you pronounce them as in the examples above:

Abstain, acquaint, aid, aide, ail,ailment, aim, aimless, appertain, appraisal, arraign, ascertain, assail, assailant, attain, avail, available, await, bail, bailiff

bailiwick, bait, bobtail, bouillabaisse, braid, brain, braise, braille, caisson, caitiff, campaign, chain, chaise, chatelaine, chilblain, claim, cocaine, complain, complaisant, constrain, constraint, contain, contrail, curtail, daily, dainty, daisy, declaim, derail, detail, detain, disclaimer, disdain, domain, drain, entail, entertain, entrails, exclaim, explain, fail, failure, fain, faint, faith, flail, frail, frailty, gaiety, gain,  gait, grain, hail, ingrain, jail, lackadaisical, laid, lain, legerdemain, plaintiff,  plaintive, praise, prevail, proclaim, ptomaine,

quail, quaint, quatrain, raid, rail, raiment, rain, rainbow, raise, raisin, reclaim, refrain, regain, remain, restrain, retain, retail, sail, saint, slain, snail, sprain, staid, stain, straight, strain, strait, sustain, swain, tail, tailor, taint, terrain, trail, train, traipse, trait, traitor, travail, twain, upbraid, vain, waif, wail, wain, wainscot, waist, waive, wassail, wraith, Craig, Elaine, Gail, Haiti, Jamaica, Kuwait, Maine, Spain.

There is a lots of AY words in english, make sure you pronounce them as in the examples above:

affray, airway, allay, always, anyway, array, ashtray,

away, bay, bayonet, bays, belay, betray, betrayal,

birthday, bray, bricklayer, byplay, byway, caraway, castaway, chambray, clay, crayon, crayfish, crossways, cutawayday, daydream, daylight, decay, defray disarray, dismay, display, doomsday, essay, everyday, expressway, fairway, faraway, fay, flay, foray, fray, freeway, gainsay, gangway, gay, gray,  halfway, hallway, hay, hayloft, headway, hearsay, heyday, highwayman, holiday, hooray, horseplay, inlay, interplay,jay, jaywalk, lay, layer, layette, layman, layoff, layover, layperson, leeway, main, stay, may maybe, mayfly,mayflower, mayhem, mayonnaise, mayor maypole, mislay, moray, nay, nosegay, nowadays, okay, outlay, overlay, overpay, parkway, parlay, pathway, pay, payment, payoff, play, playful, playground, playhouse, playpen, playwright, portray, pray, prayer, quay, ray, rayon, relay, replay, roundelay, say, slay, soothsay, spay, splay, spray, stay, stowaway, stray, subway, sway, today, tray, underway, unsay, way, wayfarer, waylaid, waylay, wayside, wayward, yesterday, Bombay, Dayton, Dwayne, Himalaya, Malaysia, Malay, Norway, Paraguay, Taylor, Uruguay, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday.