<?xml version="1.0"?>

<ownershipDocument>

    <schemaVersion>X0201</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2003-12-09</periodOfReport>


    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001084750</issuerCik>
        <issuerName>NAVISITE INC</issuerName>
        <issuerTradingSymbol>NAVI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001249727</rptOwnerCik>
            <rptOwnerName>PLUNTZE JIM</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O NAVISITE, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>400 MINUTEMAN ROAD</rptOwnerStreet2>
            <rptOwnerCity>ANDOVER</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>01810</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Financial Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>

        <derivativeTransaction>
            <securityTitle>
                <value>Stock Option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>2.55</value>
                <footnoteId id="F1"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2003-12-09</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>40000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F2"/>
            </exerciseDate>
            <expirationDate>
                <value>2013-07-10</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>40000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>40000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>

    </derivativeTable>

    <footnotes>
        <footnote id="F1">On July 10, 2003, Mr. Pluntze was granted an option to purchase 40,000 shares of Common Stock under the Company's Amended and Restated 1998 Equity Incentive Plan.  At such time, the Board of Directors had considered granting to Mr. Pluntze an option to purchase 80,000 shares, however, pursuant to the terms of such plan, the maximum number of shares of Common Stock subject to options granted to any optionee in the aggregate in any calendar year shall not exceed 40,000 shares.  On December 9, 2003, the stockholders of the Company approved the Company's Amended and Restated 2003 Stock Incentive Plan.  On such date, Mr. Pluntze was granted an option to purchase 40,000 shares of Common Stock under such plan.  The Board of Directors determined that the exercise price of such option be set at $2.55 per share, equal to the exercise price of the option granted on July 10, 2003.</footnote>
        <footnote id="F2">Option vests and becomes exercisable as to 1/24th of the number of shares subject to the option on each monthly anniversary date of July 10, 2004 until fully vested on July 10, 2006.</footnote>
    </footnotes>


    <ownerSignature>
        <signatureName>/s/ Kevin P. Lanouette pursuant to POA</signatureName>
        <signatureDate>2003-12-11</signatureDate>
    </ownerSignature>

</ownershipDocument>

